NASA space probe launched in March 1972
Pioneer 10
(originally designated
Pioneer F
) is a
NASA
space probe
launched in 1972 that completed the first mission to the planet
Jupiter
.
[5]
Pioneer 10
became the
first of five planetary probes and 11 artificial objects
to achieve the
escape velocity
needed to
leave the Solar System
. This
space exploration
project was conducted by the
NASA Ames Research Center
in California. The space probe was manufactured by
TRW Inc.
Pioneer 10
was assembled around a hexagonal
bus
with a 2.74-meter (9 ft 0 in) diameter parabolic dish
high-gain antenna
, and the spacecraft was
spin stabilized
around the axis of the antenna. Its
electric power
was supplied by four
radioisotope thermoelectric generators
that provided a combined 155 watts at launch.
It was launched on March 3, 1972, at 01:49:00 UTC (March 2 local time), by an
Atlas-Centaur
rocket from
Cape Canaveral
,
Florida
. Between July 15, 1972, and February 15, 1973, it became the first spacecraft to traverse the
asteroid belt
. Photography of Jupiter began on November 6, 1973, at a range of 25 million
kilometers
(16 million
miles
), and about 500 images were transmitted. The closest approach to the planet was on December 3, 1973, at a range of 132,252 kilometers (82,178 mi). During the mission, the on-board instruments were used to study the asteroid belt, the environment around Jupiter, the
solar wind
,
cosmic rays
, and eventually the far reaches of the Solar System and
heliosphere
.
[5]
Radio communications
were lost with
Pioneer 10
on January 23, 2003, because of the loss of electric power for its
radio transmitter
, with the probe at a distance of 12
billion
km
(80
AU
; 7.5 billion
mi
) from Earth.
Mission background
[
edit
]
History
[
edit
]
In the 1960s, American aerospace engineer
Gary Flandro
of the NASA
Jet Propulsion Laboratory
conceived of a mission, known as the
Planetary Grand Tour
, that would exploit a rare alignment of the outer planets of the Solar System. This mission would ultimately be accomplished in the late 1970s by the two
Voyager
probes, but in order to prepare for it, NASA decided in 1964 to experiment with launching a pair of probes to the
outer Solar System
.
An advocacy group named the Outer Space Panel and chaired by American space scientist
James A. Van Allen
, worked out the scientific rationale for exploring the outer planets.
NASA
Goddard
Spaceflight Center put together a proposal for a pair of "Galactic Jupiter Probes" that would pass through the asteroid belt and visit Jupiter. These were to be launched in 1972 and 1973 during favorable windows that occurred only a few weeks every 13 months. Launch during other time intervals would have been more costly in terms of propellant requirements.
Approved by NASA in February 1969,
the twin spacecraft were designated
Pioneer F
and
Pioneer G
before launch; later, they were named
Pioneer 10
and
Pioneer 11
respectively. They formed part of the
Pioneer program
,
a series of United States uncrewed space missions launched between 1958 and 1978. This model was the first in the series to be designed for exploring the outer Solar System. Based on proposals issued throughout the 1960s, the early mission objectives were to explore the interplanetary medium past the orbit of Mars, study the asteroid belt and assess the possible hazard to spacecraft traveling through the belt, and explore Jupiter and its environment.
[11]
Later development-stage objectives included the probe closely approaching Jupiter to provide data on the effect the environmental radiation surrounding Jupiter would have on the spacecraft instruments.
More than 150 scientific experiments were proposed for the missions.
The experiments to be carried on the spacecraft were selected in a series of planning sessions during the 1960s, then were finalized by early 1970. These would be to perform imaging and
polarimetry
of Jupiter and several of its satellites, make infrared and ultraviolet observations of Jupiter, detect asteroids and meteoroids, determine the composition of charged particles, and to measure magnetic fields, plasma, cosmic rays and the
zodiacal light
.
[11]
Observation of the spacecraft communications as it passed behind Jupiter would allow measurements of the planetary atmosphere, while tracking data would improve estimates of the mass of Jupiter and its moons.
[11]
NASA Ames Research Center
, rather than Goddard, was selected to manage the project as part of the Pioneer program.
The Ames Research Center, under the direction of Charles F. Hall, was chosen because of its previous experience with spin-stabilized spacecraft. The requirements called for a small, lightweight spacecraft which was magnetically clean and which could perform an interplanetary mission. It was to use spacecraft modules that had already been proven in the
Pioneer 6
through
9
missions.
[11]
Ames commissioned a documentary film by George Van Valkenburg titled "Jupiter Odyssey". It received numerous international awards, and is visible on Van Valkenburg's YouTube channel.
In February 1970, Ames awarded a combined US$380 million contract to
TRW Inc.
for building both of the
Pioneer 10
and
11
vehicles, bypassing the usual bidding process to save time. B. J. O'Brien and Herb Lassen led the TRW team that assembled the spacecraft.
Design and construction of the spacecraft required an estimated 25 million man-hours.
An engineer from TRW quipped, "This spacecraft is guaranteed for two years of interplanetary flight. If any component fails within that warranty period, just return the spacecraft to our shop and we will repair it free of charge."
[15]
To meet the schedule, the first launch would need to take place between February 29 and March 17 so that it could arrive at Jupiter in November 1974. This was later revised to an arrival date of December 1973 in order to avoid conflicts with other missions over the use of the
Deep Space Network
for communications, and to miss the period when Earth and Jupiter would be at opposite sides of the Sun. The encounter trajectory for
Pioneer 10
was selected to maximize the information returned about the radiation environment around Jupiter, even if this caused damage to some systems. It would come within about three times the radius of the planet, which was thought to be the closest it could approach and still survive the radiation. The trajectory chosen would give the spacecraft a good view of the sunlit side.
-
Pioneer 10
and
Pioneer 11
spacecraft diagram
-
Pioneer 10
in the final stages of construction (December 1971)
-
Pioneer 10
tested in a space simulation chamber (January 1972)
-
Pioneer 10
on a
Star-37E
kick motor just prior to being encapsulated for launch (February 1972)
-
Pioneer 10 during encapsulation into payload fairing
Spacecraft design
[
edit
]
The
Pioneer 10
bus measures 36 centimeters (14 in) deep and with six 76-centimeter (30 in) long panels forming the hexagonal structure. The bus houses propellant to control the orientation of the probe and eight of the eleven scientific instruments. The equipment compartment lay within an aluminum honeycomb structure to provide protection from
meteoroids
. A layer of insulation, consisting of aluminized
mylar
and
kapton
blankets, provides passive thermal control. Heat was generated by the dissipation of 70 to 120
watts
(W) from the electrical components inside the compartment. The heat range was maintained within the operating limits of the equipment by means of louvers located below the mounting platform.
[17]
The spacecraft had a launch mass of about 260 kilograms (570 lb).
[5]
: 42
At launch, the spacecraft carried 36 kilograms (79 lb) of liquid
hydrazine
monopropellant
in a 42-centimeter (17 in) diameter spherical tank.
[17]
Orientation of the spacecraft is maintained with six 4.5
N
,
[18]
hydrazine thrusters mounted in three pairs. Pair one maintained a constant spin-rate of 4.8
rpm
, pair two controlled the forward thrust, and pair three controlled the attitude. The attitude pair were used in
conical scanning
maneuvers to track Earth in its orbit.
[19]
Orientation information was also provided by a
star sensor
able to reference
Canopus
, and two
Sun sensors
.
Power and communications
[
edit
]
Pioneer 10
uses four
SNAP-19
radioisotope thermoelectric generators
(RTGs). They are positioned on two three-rod trusses, each 3 meters (9.8 ft) in length and 120 degrees apart. This was expected to be a safe distance from the sensitive scientific experiments carried on board. Combined, the RTGs provided 155 W at launch, and decayed to 140 W in transit to Jupiter. The spacecraft required 100 W to power all systems.
[5]
: 44?45
The generators are powered by the radioisotope fuel
plutonium-238
, which is housed in a multi-layer capsule protected by a graphite heat shield.
[21]
The pre-launch requirement for the SNAP-19 was to provide power for two years in space; this was greatly exceeded during the mission.
[22]
The plutonium-238 has a
half-life
of 87.74 years, so that after 29 years the radiation being generated by the RTGs was at 80% of its intensity at launch. However, steady deterioration of the
thermocouple
junctions led to a more rapid decay in electrical power generation, and by 2001 the total power output was 65 W. As a result, later in the mission only selected instruments could be operated at any one time.
[17]
The space probe includes a redundant system of
transceivers
, one attached to the narrow-beam,
high-gain antenna
, the other to an omni-antenna and medium-gain antenna. The parabolic dish for the high-gain antenna is 2.74 meters (9.0 ft) in diameter and made from an aluminum honeycomb sandwich material. The spacecraft was spun about an axis that is parallel to the axis of this antenna so that it could remain oriented toward the Earth.
[17]
Each transceiver is an 8 W one and transmits data across the
S-band
using 2110 MHz for the uplink from Earth and 2292 MHz for the downlink to Earth with the
Deep Space Network
tracking the signal. Data to be transmitted is passed through a
convolutional encoder
so that most communication errors could be
corrected
by the receiving equipment on Earth.
[5]
: 43
The data transmission rate at launch was 256 bit/s, with the rate degrading by about 1.27 millibit/s for each day during the mission.
[17]
Much of the computation for the mission is performed on Earth and transmitted to the spacecraft, where it was able to retain in memory up to five commands of the 222 possible entries by ground controllers. The spacecraft includes two command decoders and a command distribution unit, a very limited form of a processor, to direct operations on the spacecraft. This system requires that mission operators prepare commands long in advance of transmitting them to the probe. A data storage unit is included to record up to 6,144
bytes
of information gathered by the instruments. The digital telemetry unit is used to prepare the collected data in one of the thirteen possible formats before transmitting it back to Earth.
[5]
: 38
Scientific instruments
[
edit
]
Helium Vector
Magnetometer
(
HVM
)
|
|
This instrument measures the fine structure of the interplanetary magnetic field, mapped the Jovian magnetic field, and provided magnetic field measurements to evaluate solar wind interaction with Jupiter. The magnetometer consists of a helium-filled cell mounted on a 6.6 m boom to partly isolate the instrument from the spacecraft's magnetic field.
[23]
- Principal investigator:
Edward Smith / JPL
- Data:
PDS/PPI data catalog, NSSDC data archive
|
Quadrispherical
Plasma
Analyzer
|
|
Peers through a hole in the large dish-shaped antenna to detect particles of the solar wind originating from the Sun.
[24]
- Principal investigator:
Aaron Barnes / NASA Ames Research Center
- Data:
PDS/PPI data catalog, NSSDC data archive
|
Charged Particle
Instrument (
CPI
)
|
|
Detects cosmic rays in the Solar System.
[26]
- Principal investigator:
John Simpson
/ University of Chicago
- Data:
NSSDC data archive
|
Cosmic Ray
Telescope (
CRT
)
|
|
Collects data on the composition of the cosmic ray particles and their energy ranges.
[27]
- Principal investigator:
Frank B. McDonald
/ NASA Goddard Space Flight Center
- Data:
PDS/PPI data catalog, NSSDC data archive
|
Geiger Tube Telescope
(
GTT
)
|
|
Surveys the intensities, energy spectra, and angular distributions of electrons and protons along the spacecraft's path through the radiation belts of Jupiter.
[28]
- Principal investigator:
James A. Van Allen
/ University of Iowa
- Data:
PDS/PPI data catalog, NSSDC data archive
|
Trapped
Radiation
Detector (
TRD
)
|
|
Includes an
unfocused
Cerenkov counter
that detects the light emitted in a particular direction as particles passed through it recording electrons of energy, 0.5 to 12
MeV
, an
electron scatter detector
for electrons of energy, 100 to 400 keV, and a
minimum ionizing detector
consisting of a solid-state diode that measure minimum ionizing particles (<3 MeV) and protons in the range of 50 to 350 MeV.
[29]
- Principal investigator:
R. Fillius / University of California San Diego
- Data:
NSSDC data archive
|
Meteoroid
Detectors
|
|
Twelve panels of pressurized cell detectors mounted on the back of the main dish antenna record penetrating impacts of small meteoroids.
[30]
- Principal investigator:
William Kinard / NASA Langley Research Center
- Data:
NSSDC data archive list
|
Asteroid/Meteoroid Detector (
AMD
)
|
|
Meteoroid-asteroid detector look into space with four non-imaging telescopes to track particles ranging from close by bits of dust to distant large asteroids.
[31]
- Principal investigator:
Robert Soberman / General Electric Company
- Data:
NSSDC data archive
|
Ultraviolet
Photometer
|
|
Ultraviolet light is sensed to determine the quantities of hydrogen and helium in space and on Jupiter.
[32]
- Principal investigator:
Darrell Judge / University of Southern California
- Data:
PDS/PPI data catalog, NSSDC data archive
|
Imaging
Photopolarimeter
(
IPP
)
|
|
The imaging experiment relies upon the spin of the spacecraft to sweep a small telescope across the planet in narrow strips only 0.03 degrees wide, looking at the planet in red and blue light. These strips were then processed to build up a visual image of the planet.
[33]
- Principal investigator:
Tom Gehrels
/ University of Arizona
- Data:
NSSDC data archive list
|
Infrared
Radiometer
|
|
Provides information on cloud temperature and the output of heat from Jupiter.
[34]
- Principal investigator:
Andrew Ingersoll / California Institute of Technology
|
Mission profile
[
edit
]
Launch and trajectory
[
edit
]
Pioneer 10
was launched on March 3, 1972, at 01:49:00 UTC (8:49 p.m. Eastern Standard Time on March 2) by the
National Aeronautics and Space Administration
from
Space Launch Complex 36A
in Florida, aboard an
Atlas-Centaur
. The third stage of the
expendable vehicle
consisted of a solid fuel
Star-37E
stage (TE-M-364-4) developed specifically for the Pioneer missions. This stage provided about 15,000 pounds (6,800 kg) of thrust and spun up the spacecraft.
[35]
The spacecraft had an initial spin rate of 30 rpm. Twenty minutes following the launch, the vehicle's three booms were extended, which slowed the rotation rate to 4.8 rpm. This rate was maintained throughout the voyage. The launch vehicle accelerated the probe for a net interval of 17 minutes, reaching a velocity of 51,682 km/h (32,114 mph).
After the high-gain antenna was contacted, several of the instruments were activated for testing while the spacecraft was moving through the Earth's radiation belts. Ninety minutes after launch, the spacecraft reached interplanetary space.
Pioneer 10
passed by the Moon in 11 hours
and became the fastest human-made object at that time.
Two days after launch, the scientific instruments were turned on, beginning with the cosmic ray telescope. After ten days, all of the instruments were active.
During the first seven months of the journey, the spacecraft made three course corrections. The on-board instruments underwent checkouts, with the
photometers
examining Jupiter and the
Zodiacal light
, and experiment packages being used to measure cosmic rays, magnetic fields and the solar wind. The only anomaly during this interval was the failure of the Canopus sensor, which instead required the spacecraft to maintain its orientation using the two Sun sensors.
While passing through
interplanetary medium
,
Pioneer 10
became the first mission to detect interplanetary atoms of helium. It also observed high-energy ions of aluminum and sodium in the
solar wind
. The spacecraft recorded important
heliophysics
data in early August 1972 by registering a
solar shock wave
when it was at a distance of 2.2 AU (330 million km; 200 million mi).
[39]
On July 15, 1972,
Pioneer 10
was the first spacecraft to enter the asteroid belt,
[40]
located between the orbits of Mars and Jupiter. The project planners expected a safe passage through the belt, and the closest the trajectory would take the spacecraft to any of the known asteroids was 8.8 million kilometers (5.5 million miles). One of the nearest approaches was to the asteroid
307 Nike
on December 2, 1972.
The on-board experiments demonstrated a deficiency of particles below a
micrometer
(μm) in the belt, as compared to the vicinity of the Earth. The density of dust particles between 10 and 100 μm did not vary significantly during the trip from the Earth to the outer edge of the belt. Only for particles with a diameter of 100 μm to 1.0 mm did the density show an increase, by a factor of three in the region of the belt. No fragments larger than a millimeter were observed in the belt, indicating these are likely rare; certainly much less common than anticipated. As the spacecraft did not collide with any particles of substantial size, it passed safely through the belt, emerging on the other side about February 15, 1973.
[42]
Encounter with Jupiter
[
edit
]
On November 6, 1973, the
Pioneer 10
spacecraft was at a distance of 25 million km (16 million mi) from Jupiter. Testing of the imaging system began, and the data were successfully received back at the Deep Space Network. A series of 16,000 commands were then uploaded to the spacecraft to control the flyby operations during the next sixty days. The orbit of the outer moon
Sinope
was crossed on November 8. The
bow shock
of Jupiter's magnetosphere was reached on November 16, as indicated by a drop in the velocity of the
solar wind
from 451 km/s (280 mi/s) to 225 km/s (140 mi/s). The
magnetopause
was passed through a day later. The spacecraft instruments confirmed that the magnetic field of Jupiter was inverted compared to that of Earth. By the 29th, the orbits of all of the outermost moons had been passed, and the spacecraft was operating flawlessly.
Red and blue pictures of Jupiter were being generated by the imaging photopolarimeter as the rotation of the spacecraft carried the instrument's field of view past the planet. These red and blue colors were combined to produce a synthetic green image, allowing a three-color combination to produce the rendered image. On November 26, a total of twelve such images were received back on Earth. By December 2, the image quality exceeded the best images made from Earth. These were being displayed in real-time back on Earth, and the Pioneer program would later receive an
Emmy award
for this presentation to the media. The motion of the spacecraft produced geometric distortions that later had to be corrected by computer processing.
During the encounter, a total of more than 500 images were transmitted.
The trajectory of the spacecraft took it along the magnetic equator of Jupiter, where the
ion radiation
was concentrated.
Peak
flux
for this electron radiation is 10,000 times stronger than the maximum radiation around the Earth.
Pioneer 10 passed through the inner radiation belts within 20
R
J
, receiving an integrated dose of 200,000
rads
from
electrons
and 56,000 rads from
protons
(in comparison, a whole body dose of 500 rads is fatal to humans).
[48]
The level of radiation at Jupiter was ten times more powerful than Pioneer's designers had predicted, leading to fears that the probe would not survive. Starting on December 3, the radiation around Jupiter caused false commands to be generated. Most of these were corrected by contingency commands, but an image of
Io
and a few close-ups of Jupiter were lost. Similar false commands would be generated on the way out from the planet.
Nonetheless,
Pioneer 10
did succeed in obtaining images of the moons
Ganymede
and
Europa
. The image of Ganymede showed low
albedo
features in the center and near the south pole, while the north pole appeared brighter. Europa was too far away to obtain a detailed image, although some albedo features were apparent.
The trajectory of
Pioneer 10
was chosen to take it behind Io, allowing the
refractive effect
of the moon's atmosphere on the radio transmissions to be measured. This demonstrated that the
ionosphere
of the moon was about 700 kilometers (430 mi) above the surface of the day side, and the density ranged from 60,000 electrons per cubic centimeter on the dayside to 9,000 electrons per cubic centimeter on the night face. An unexpected discovery was that Io was orbiting within a cloud of hydrogen that extended for about 805,000 kilometers (500,000 mi), with a width and height of 402,000 kilometers (250,000 mi). A smaller, 110,000-kilometer (68,000 mi) cloud was believed to have been detected near Europa.
It was not until after
Pioneer 10
had cleared the asteroid belt that NASA selected a trajectory towards Jupiter which included a slingshot effect to send the spacecraft out of the Solar System.
Pioneer 10
was the first spacecraft to attempt such a maneuver, a model for future missions. Such an extended mission was not in the initial proposal, but was planned for prior to launch.
[50]
At the closest approach, the velocity of the spacecraft reached 132,000 km/h (82,000 mph; 37,000 m/s),
and it came within 132,252 kilometers (82,178 mi) of the outer atmosphere of Jupiter. Close-up images of the Great Red Spot and the terminator were obtained. Communication with the spacecraft then ceased as it passed behind the planet.
The
radio occultation
data allowed the temperature structure of the outer atmosphere to be measured, showing a temperature inversion between the altitudes with 10 and 100
mbar
pressures. Temperatures at the 10-mbar level ranged from ?133 to ?113
°C
(140 to 160
K
; ?207 to ?171
°F
), while temperatures at the 100 mbar level were ?183 to ?163 °C (90.1 to 110.1 K; ?297.4 to ?261.4 °F).
The spacecraft generated an infrared map of the planet, which confirmed the idea that the planet radiated more heat than it received from the Sun.
Crescent images of the planet were then returned as
Pioneer 10
moved away from the planet.
As the spacecraft headed outward, it again passed the bow shock of Jupiter's magnetosphere. As this front is constantly shifting in space because of dynamic interaction with the solar wind, the vehicle crossed the bow shock a total of 17 times before it escaped completely.
- Jupiter encounter images
-
Jupiter as imaged by
Pioneer 10
-
Jupiter close up as imaged by
Pioneer 10
-
Ganymede
as imaged by
Pioneer 10
-
Europa
as imaged by
Pioneer 10
-
Crescent Jupiter as imaged by
Pioneer 10
Deep space
[
edit
]
Pioneer 10
crossed the orbit of Saturn in 1976 and the orbit of Uranus in 1979.
On June 13, 1983, the craft crossed the orbit of
Neptune
, and so became the first human-made object to leave the proximity of the major planets of the Solar System. The mission came to an official end on March 31, 1997, when it had reached a distance of 67 AU (10.0 billion km; 6.2 billion mi) from the Sun, though the spacecraft was still able to transmit coherent data after this date.
[17]
After March 31, 1997,
Pioneer 10
'
s weak signal continued to be tracked by the Deep Space Network to aid the training of flight controllers in the process of acquiring deep-space radio signals. There was an
Advanced Concepts
study applying
chaos theory
to extract coherent data from the fading signal.
[57]
The last successful reception of
telemetry
was received from
Pioneer 10
on April 27, 2002; subsequent signals were barely strong enough to detect and provided no usable data. The final, very weak signal from
Pioneer 10
was received on January 23, 2003, when it was 12 billion km (80 AU; 7.5 billion mi) from Earth.
[58]
Further attempts to contact the spacecraft were unsuccessful. A final attempt was made on the evening of March 4, 2006, the last time the antenna would be correctly aligned with Earth. No response was received from
Pioneer 10
.
[59]
NASA decided that the RTG units had probably fallen below the power threshold needed to operate the transmitter. Hence, no further attempts at contact were made.
Timeline
[
edit
]
Timeline of travel
|
Date
|
Event
|
1972-03-03
|
Spacecraft launched
|
1972-06-
|
Crossed orbit of Mars
|
1972-07-15
|
Entered the asteroid belt
|
1972-07-15
|
Start Jupiter observation phase
Time
|
Event
|
1973-12-03
|
Encounter with
Jovian system
|
12:26:00
|
Callisto
flyby at 1,392,300 km (865,100 mi)
|
13:56:00
|
Ganymede
flyby at 446,250 km (277,290 mi)
|
19:26:00
|
Europa
flyby at 321,000 km
|
22:56:00
|
Io
flyby at 357,000 km
|
1973-12-04
|
|
02:26:00
|
Jupiter closest approach at 200,000 km
|
02:36:00
|
Jupiter equator plane crossing
|
02:41:45
|
Io
occultation
entry
|
02:43:16
|
Io occultation exit
|
03:42:25
|
Jupiter occultation entry
|
03:42:25
|
Jupiter shadow entry
|
04:15:35
|
Jupiter occultation exit
|
04:47:21
|
Jupiter shadow exit
|
1974-01-01
|
Phase stop
|
|
1974-01-01
|
Begin Pioneer Interstellar Mission
|
More
|
1975-02-10
|
The US Post Office issued a
commemorative stamp
featuring the
Pioneer 10
space probe
(
See image
)
.
|
1983-04-25
|
Crossed orbit of
Pluto
, still defined as a planet at the time (Pluto's irregular orbit meant it was closer to the Sun than Neptune).
[61]
|
1983-06-13
|
Crossed orbit of
Neptune
, the farthest planet away from the Sun at the time, to become the first human-made object to depart the Solar System.
[62]
By dialing 1-900-410-4111, one could access a recording provided by TRW that was made by slowing down and converting
Pioneer 10's
data feed to analog sounds.
[63]
|
1997-03-31
|
End of mission. Contact is maintained with spacecraft to record telemetry.
[64]
|
1998-02-17
|
Voyager 1
overtakes
Pioneer 10
as the most distant human-made object from the Sun, at 69.419
AU
.
Voyager 1
is moving away from the Sun over 1 AU per year faster than
Pioneer 10
.
[64]
|
2002-03-02
|
Successful reception of telemetry. 39 minutes of clean data received from a distance of 79.83 AU
[65]
|
2002-04-27
|
Last successful reception of telemetry. 33 minutes of clean data received from a distance of 80.22 AU
[65]
|
2003-01-23
|
Final signal received from the spacecraft. Reception was very weak and subsequent signals were barely strong enough to detect.
[65]
|
2003-02-07
|
Unsuccessful attempt to contact spacecraft
[65]
|
2023-07-18
|
Projections indicate that
Voyager 2
overtook Pioneer 10 as the second farthest spacecraft from the Sun
[66]
[67]
|
|
Current status and future
[
edit
]
On July 18, 2023,
Voyager 2
overtook
Pioneer 10
, making
Pioneer 10
the third farthest spacecraft from the Sun after
Voyager 1
and
Voyager 2
.
[66]
[67]
Sunlight takes 18.7 hours to reach
Pioneer 10
. The brightness of the Sun from the spacecraft is magnitude −16.1.
[68]
Pioneer 10
is currently travelling in the direction of the constellation
Taurus
.
[68]
If left undisturbed,
Pioneer 10
and its sister craft
Pioneer 11
will join the two Voyager spacecraft and the
New Horizons
spacecraft in leaving the Solar System to wander the
interstellar medium
. The
Pioneer 10
trajectory is expected to take it in the general direction of the star
Aldebaran
, currently located at a distance of about 68
light years
. If Aldebaran had zero
relative velocity
, it would require more than two million years for the spacecraft to reach it.
[17]
[68]
Well before that, in about 90,000 years,
Pioneer 10
will pass about 0.23
parsecs
(0.75
light-years
) from the late
K-type star
HIP 117795
.
[69]
This is the closest stellar flyby in the next few million years of all the
Pioneer
,
Voyager
, and
New Horizons
spacecraft, which are leaving the Solar System.
A backup unit,
Pioneer H
, is currently on display in the "Milestones of Flight" gallery at the
National Air and Space Museum
in
Washington, D.C.
[70]
Many elements of the mission proved to be critical in the planning of the Voyager program.
Pioneer plaque
[
edit
]
Because it was strongly advocated by
Carl Sagan
,
Pioneer 10
and
Pioneer 11
carry a 152 by 229 mm (6.0 by 9.0 in) gold-anodized aluminum
plaque
in case either spacecraft is ever found by intelligent life-forms from another planetary system. The plaques feature the nude figures of a human male and female along with several symbols that are designed to provide information about the origin of the spacecraft.
[72]
The plaque is attached to the antenna support struts where it would be shielded from interstellar dust.
[73]
Pioneer 10
in popular media
[
edit
]
In the film
Star Trek V: The Final Frontier
, a Klingon Bird-of-Prey destroys
Pioneer 10
as target practice.
[74]
In the serialized speculative fiction multimedia narrative
17776
, one of the main characters is a sentient
Pioneer 10
.
See also
[
edit
]
References
[
edit
]
- ^
a
b
"Pioneer 10"
. NASA's Solar System Exploration website
. Retrieved
August 10,
2023
.
- ^
"A Summary of the Pioneer 10 Maneuver Strategy"
(PDF)
. October 1972.
- ^
"Beyond Earth: A Chronicle of Deep Space Exploration"
. September 20, 2018.
- ^
"The Pioneer Missions"
. NASA. March 26, 2007. Archived from
the original
on June 29, 2011
. Retrieved
May 7,
2019
.
- ^
a
b
c
d
e
f
Fimmel, R. O.; W. Swindell; E. Burgess (1974).
SP-349/396 PIONEER ODYSSEY
. NASA-Ames Research Center. SP-349/396
. Retrieved
January 9,
2011
.
- ^
a
b
c
d
Mark, Hans (August 1974).
"The Pioneer Jupiter Mission"
.
SP-349/396 Pioneer Odyssey
. NASA
. Retrieved
July 6,
2011
.
- ^
"PIONEER BEAT 'WARRANTY'
"
.
Aviation Week
. Retrieved
September 15,
2017
.
- ^
a
b
c
d
e
f
g
Anderson, John D.; Laing, Philip A.; et al. (April 2002). "Study of the anomalous acceleration of Pioneer 10 and 11".
Physical Review D
.
65
(8): 082004.
arXiv
:
gr-qc/0104064
.
Bibcode
:
2002PhRvD..65h2004A
.
doi
:
10.1103/PhysRevD.65.082004
.
S2CID
92994412
.
- ^
Wade, Mark.
"Pioneer 10-11"
.
Encyclopedia Astronautica
. Archived from
the original
on November 20, 2010
. Retrieved
February 8,
2011
.
- ^
"Weebau Spaceflight Encyclopedia"
. November 9, 2010
. Retrieved
January 12,
2012
.
- ^
Skrabek, E. A.; McGrew, John W. (January 12?16, 1987). "Pioneer 10 and 11 RTG performance update".
Transactions of the Fourth Symposium on Space Nuclear Power Systems
. Albuquerque, New Mexico. pp. 201?204.
Bibcode
:
1987snps.symp..201S
.
- ^
Bennett, G.L.; Skrabek, E.A. (March 26?29, 1996). "Power performance of US space radioisotope thermoelectric generators".
Fifteenth International Conference on Thermoelectrics
. Pasadena, CA. pp. 357?372.
doi
:
10.1109/ICT.1996.553506
.
- ^
Smith, Edward J.
"Magnetic Fields"
. NASA / National Space Science Data Center
. Retrieved
February 19,
2011
.
- ^
"Quadrispherical Plasma Analyzer"
. NASA / National Space Science Data Center
. Retrieved
February 19,
2011
.
- ^
"Charged Particle Instrument (CPI)"
. NASA / National Space Science Data Center
. Retrieved
February 19,
2011
.
- ^
"Cosmic-Ray Spectra"
. NASA / National Space Science Data Center
. Retrieved
February 19,
2011
.
- ^
"Geiger Tube Telescope (GTT)"
. NASA / National Space Science Data Center
. Retrieved
February 19,
2011
.
- ^
"Jovian Trapped Radiation"
. NASA / National Space Science Data Center
. Retrieved
February 19,
2011
.
- ^
"Meteoroid Detectors"
. NASA / National Space Science Data Center
. Retrieved
February 19,
2011
.
- ^
"Asteroid/Meteoroid Astronomy"
. NASA / National Space Science Data Center
. Retrieved
February 19,
2011
.
- ^
"Ultraviolet Photometry"
. NASA / National Space Science Data Center
. Retrieved
February 19,
2011
.
- ^
"Imaging Photopolarimeter (IPP)"
. NASA / National Space Science Data Center
. Retrieved
February 19,
2011
.
- ^
"Infrared Radiometers"
. NASA / National Space Science Data Center
. Retrieved
February 19,
2011
.
- ^
"NASA Glenn Pioneer Launch History"
. NASA/Glenn Research Center. March 7, 2003. Archived from
the original
on July 13, 2017
. Retrieved
June 13,
2011
.
- ^
Knipp, Delores J.; B. J. Fraser; M. A. Shea; D. F. Smart (2018).
"On the Little-Known Consequences of the 4 August 1972 Ultra-Fast Coronal Mass Ejecta: Facts, Commentary and Call to Action"
.
Space Weather
.
16
(11): 1635?1643.
Bibcode
:
2018SpWea..16.1635K
.
doi
:
10.1029/2018SW002024
.
- ^
Siddiqi, Asif A. (2018).
Beyond Earth: A Chronicle of Deep Space Exploration, 1958?2016
(PDF)
. The NASA history series (second ed.). Washington, DC: NASA History Program Office. p. 1.
ISBN
9781626830424
.
LCCN
2017059404
. SP2018-4041.
Archived
(PDF)
from the original on October 9, 2022.
- ^
Staff (March 1, 1973).
"Pioneer 10 beats the asteroid belt"
.
New Scientist
.
57
(835). New Scientist Publications: 470.
- ^
Hunt, Garry; et al. (1981).
Jupiter
(1st ed.). London: Rand McNally.
ISBN
978-0-528-81542-3
.
- ^
"NASA says 'bye bye Birdie' to Pioneer 10 Spacecraft"
.
The Salina Journal
. June 13, 1983
. Retrieved
December 6,
2017
.
- ^
Phillips, Tony (May 3, 2001).
"Seven billion miles and counting"
. High Energy Astrophysics Science Archive Research Center, NASA
. Retrieved
June 7,
2011
.
- ^
"This Month in History",
Smithsonian
magazine, June 2003.
- ^
Lakdawalla, Emily (March 6, 2006).
"The final attempt to contact Pioneer 10"
. The Planetary Society. Archived from
the original
on June 16, 2006
. Retrieved
June 7,
2011
.
- ^
Wilford, John Noble (April 26, 1983).
"Pioneer 10 Pushes Beyond Goals, Into the Unknown"
.
The New York Times
. Retrieved
June 13,
2011
.
- ^
"Pioneer 10"
.
Solar System Exploration
.
NASA
. Archived from
the original
on October 5, 2012
. Retrieved
June 13,
2011
.
- ^
"The Galveston Daily News"
.
The Galveston Daily News on June 13, 1983
.
The Galveston Daily News
. June 13, 1983
. Retrieved
January 8,
2014
.
- ^
a
b
Allen, J. A. Van (February 17, 1998).
"Update on Pioneer 10"
. University of Iowa
. Retrieved
January 9,
2011
.
- ^
a
b
c
d
Allen, J. A. Van (February 20, 2003).
"Termination of Pioneer 10's Mission"
. University of Iowa
. Retrieved
January 9,
2011
.
- ^
a
b
"Distance between the Sun and Voyager 2"
.
- ^
a
b
"Distance between the Sun and Pioneer 10"
.
- ^
a
b
c
Peat, Chris (September 9, 2012).
"Spacecraft escaping the Solar System"
.
Heavens-Above
. Retrieved
September 9,
2019
.
- ^
Bailer-Jones, Coryn A. L.; Farnocchia, Davide (April 3, 2019).
"Future stellar flybys of the Voyager and Pioneer spacecraft"
.
Research Notes of the AAS
.
3
(4): 59.
arXiv
:
1912.03503
.
Bibcode
:
2019RNAAS...3...59B
.
doi
:
10.3847/2515-5172/ab158e
.
S2CID
134524048
.
- ^
"Milestones of Flight"
. Smithsonian National Air and Space Museum. Archived from
the original
on April 15, 2012
. Retrieved
June 7,
2011
.
- ^
Carl Sagan; Linda Salzman Sagan & Frank Drake (February 25, 1972). "A Message from Earth".
Science
.
175
(4024): 881?884.
Bibcode
:
1972Sci...175..881S
.
doi
:
10.1126/science.175.4024.881
.
PMID
17781060
.
Paper on the background of the plaque. Pages available online:
1
Archived
February 28, 2008, at the
Wayback Machine
,
2
Archived
February 28, 2008, at the
Wayback Machine
,
3
Archived
February 28, 2008, at the
Wayback Machine
,
4
Archived
February 28, 2008, at the
Wayback Machine
- ^
"The Plaque"
. NASA
. Retrieved
April 29,
2023
.
- ^
Okuda, Michael; Okuda, Denise; Mirek, Debbie (May 17, 2011).
The Star Trek Encyclopedia
. Simon and Schuster. p. 1716.
ISBN
9781451646887
. Retrieved
June 11,
2018
.
Bibliography
[
edit
]
- Angelo, Joseph A. (2007).
Robot spacecraft
. Frontiers in space. Facts on File science library. Infobase Publishing.
ISBN
978-0-8160-5773-3
.
- Burgess, Eric (1982).
"Pioneer odysseys"
.
By Jupiter: odysseys to a giant
. Columbia University Press.
ISBN
978-0-231-05176-7
.
- Burrows, William E. (1990).
Exploring space: voyages in the solar system and beyond
. Random House.
ISBN
978-0-394-56983-3
.
- Burrows, William E. (1999).
This new ocean: the story of the first space age
. Modern Library. Random House Digital, Inc.
ISBN
978-0-375-75485-2
.
- Dyer, Davis (1998).
TRW: pioneering technology and innovation since 1900
. Harvard Business Press.
ISBN
978-0-87584-606-4
.
- Fimmel, Richard O.; van Allen, James; Burgess, Eric (1980).
Pioneer: first to Jupiter, Saturn, and beyond
. Washington D.C., USA: NASA Scientific and Technical Information Office.
- Launius, Roger D. (2004).
Frontiers of space exploration
. Greenwood Press guides to historic events of the twentieth century (2nd ed.). Greenwood Publishing Group. p.
36
.
ISBN
978-0-313-32524-3
.
- Rogers, John Hubert (1995).
The giant planet Jupiter
. Practical astronomy handbook series. Vol. 6. Cambridge University Press.
ISBN
978-0-521-41008-3
.
- Simpson, J. A. (2001).
"The cosmic radiation"
. In Johan A. M. Bleeker; Johannes Geiss; Martin C. E. Huber (eds.).
The century of space science
. Vol. 1. Springer. p. 146.
ISBN
978-0-7923-7196-0
.
- Van Allen, James A. (2001).
"Magnetospheric physics"
. In Johannes Alphonsus Marie Bleeker; Arturo Russo (eds.).
The century of space science
. Vol. 1. Springer. p. 155.
ISBN
978-0-7923-7196-0
.
- Wolverton, Mark (2004).
The depths of space: the story of the Pioneer planetary probes
. National Academies Press.
ISBN
978-0-309-09050-6
.
External links
[
edit
]
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