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Asteroid with which Venus shares its orbit around the Sun
A
Venus trojan
is an
asteroid
that orbits the
Sun
in the vicinity of
Venus
. Trojans travel in Venus-Sun
Lagrangian points
L
4
.; leading 60° or
L
5
; trailing 60°.
[1]
2013 ND
15
is the only known trojan of Venus, and is located at Venus' Lagrangian point L
4
.
Such trojans have little gravitational effect on Venus, which means trojans in Venus’s Lagrange points could’ve been put there by
gravitational scattering
, stating that the other
inner planets
(with little contribution from the
outer planets
) gravitationally pulled asteroids into a proper trajectory towards Venus (this was as the planets were being pulled more towards their present day orbits).
Characteristics of Venusian trojans range from them being a few kilometers. According to a
Minor Planet Center
list, it doesn’t list
2013 ND
15
, as it’s only passed 0.077 AU from
Earth
on 21 June 2016.
List of Venus trojans
Designation
|
Cloud
|
Semimajor axis
(AU)
|
Perihelion
(AU)
|
Eccentricity
|
Inclination
(°)
|
(
H
)
|
Diameter
(
m
)
|
2013 ND
15
|
L4
|
1.20
|
0.72
|
0.39
|
2.65
|
18.3
|
0.6
±
0.8
|
Exploration
[
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]
The only known temporary trojan of Venus is
2013 ND
15
, and orbits Venus in a
tadpole orbit
around Venus' Lagrangian point L
4
. The trojan was discovered in July 2013 by N. Primak, A. Schultz, T. Goggia and K. Chambers. The astronomers were observing for NASA’s
Pan-STARRS
project.
The asteroids characteristics were used for a simulation, where it was proven that it was a viable trojan of Venus, the first of its kind.
Just like most asteroids in our Solar system, it’s hypothesized that the asteroids surface is covered in metal-rich minerals: silicates and carbonates, although no information has been provided to support other minerals’ presence on the asteroid.
References
[
edit
]