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| Orbit Diagram
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Note:
Make sure you have Java enabled on your browser to see the applet.
This applet is provided as a 3D orbit visualization tool.
The applet was implemented using 2-body methods,
and hence
should not be used for determining accurate long-term trajectories
(over several years or decades) or planetary encounter circumstances
.
For accurate long-term ephemerides, please instead use our
Horizons system
.
Note:
If the applet has stopped working because of a
recent Java upgrade
,
here is a possible workaround
.
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Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.
Orbit Viewer applet originally written and kindly provided by
Osamu Ajiki
(AstroArts),
and further modified by
Ron Baalke
(JPL).
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Orbital Elements at Epoch 2449400.5 (1994-Feb-17.0) TDB
Reference:
JPL J863/77
(heliocentric ecliptic J2000)
| Element
| Value
| Uncertainty (1-sigma)
| Units
|
| e
| 0.967142908462304
| 5.035e-09
|
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| a
| 17.8341442925537
| 3.8913e-08
| au
|
| q
| 0.585978111516909
| 8.8924e-08
| au
|
| i
| 162.262690579161
| 6.7791e-06
| deg
|
| node
| 58.42008097656843
| 9.0539e-06
| deg
|
| peri
| 111.3324851045177
| 1.1714e-05
| deg
|
| M
| 38.3842644764388
| 1.4226e-07
| deg
|
| t
p
| 2446467.395317050925
(1986-Feb-05.89531705)
| 4.7896e-06
| JED
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| period
| 27509.1290731861
75.32
| 9.0034e-05
2.465e-07
| d
yr
|
| n
| .01308656479244564
| 4.2831e-11
| deg/d
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| Q
| 35.08231047359043
| 7.6546e-08
| au
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Additional Model Parameters
| Parameter
| Value
| Uncertainty (1-sigma)
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| A1
[EST]
| 2.696463929511566E-10
| 3.084E-11
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| A2
[EST]
| 1.554613388970244E-10
| 3.205E-15
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| S0
[EST]
| 861.6729585598083
| 16.03
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| Orbit Determination Parameters
Additional Information
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[ show covariance matrix ]
Physical Parameter Table
| Parameter
|
Symbol
|
Value
|
Units
|
Sigma
|
Reference
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Notes
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| comet total magnitude
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M1
|
5.5
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mag
|
n/a
|
ICQ 2005 Handbook
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| comet total magnitude slope
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K1
|
8.0
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n/a
|
ICQ 2005 Handbook
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| comet nuclear magnitude
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M2
|
13.6
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mag
|
n/a
|
ICQ 2005 Handbook
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| comet nuclear magnitude slope
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K2
|
5.0
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n/a
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ICQ 2005 Handbook
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| comet nuclear phase coefficient
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PC
|
0.03
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n/a
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ICQ 2005 Handbook
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| diameter
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diameter
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11.0
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km
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n/a
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Lamy,P.L.;Toth,I.;Fernandez,Y.R.;Weaver,H.A. (2004) Comets II, pp. 223-264
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| extent
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extent
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14.9x8.2
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km
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n/a
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Keller et al. (1987) Astron. Astrophys. 187:807-823
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measurements repeatable within 100 to 200 meters
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| geometric albedo
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albedo
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0.04
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0.01
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Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002)
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| 1P/Halley
Discovered 1758-Dec-25 by Palitzsch, Johann Georg
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| First known observation: -239/05/00
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| Reference:
comet.dis
| Last Updated:
2003-08-29
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[ show close-approach data ]
Alternate Designations
Perihelion
Year
(est.)
| New-Style
Desig
| Roman
Numeral
| Year/
Letter
| | 1986.1
| 1P/1982 U1
| 1986 III
| 1982i
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| 1910.8
| 1P/1909 R1
| 1910 II
| 1909c
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| 1835.5
| 1P/1835 P1
| 1835 III
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| 1760.1
| 1P/1758 Y1
| 1759 I
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| 1684.8
| 1P/1682 Q1
| 1682
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| 1609.5
| 1P/1607 S1
| 1607
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| 1534.2
| 1P/1531 P1
| 1531
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| 1458.9
| 1P/1456 K1
| 1456
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| 1383.5
| 1P/1378 S1
| 1378
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| 1308.2
| 1P/1301 R1
| 1301
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| 1232.9
| 1P/1222 R1
| 1222
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| 1157.6
| 1P/1145 G1
| 1145
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| 1082.3
| 1P/1066 G1
| 1066
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| 1007.0
| 1P/ 989 N1
| 989
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|
| 931.6
| 1P/ 912 J1
| 912
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| 856.3
| 1P/ 837 F1
| 837
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| 781.0
| 1P/ 760 K1
| 760
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| 705.7
| 1P/ 684 R1
| 684
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| 630.4
| 1P/ 607 H1
| 607
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| 555.1
| 1P/ 530 Q1
| 530
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| 479.7
| 1P/ 451 L1
| 451
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| 404.4
| 1P/ 374 E1
| 374
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| 329.1
| 1P/ 295 J1
| 295
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| 253.8
| 1P/ 218 H1
| 218
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| 178.5
| 1P/ 141 F1
| 141
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| 103.2
| 1P/ 66 B1
| 66
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| -47.5
| 1P/ -11 Q1
| -11
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| -122.8
| 1P/ -86 Q1
| -86
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| -198.1
| 1P/-163 U1
| -163
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| -273.4
| 1P/-239 K1
| -239
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