2920 Automedon (1981 JR) |
Classification: Jupiter Trojan SPK-ID: 2002920 |
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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .02727114717977677 | 2.6326e-08 | |
a | 5.110008922889578 | 6.5891e-08 | au |
q | 4.970653117463484 | 1.7457e-07 | au |
i | 21.11862457151831 | 2.9674e-06 | deg |
node | 230.9459863734988 | 4.5026e-06 | deg |
peri | 196.6857533805446 | 6.5527e-05 | deg |
M | 307.5358578406054 | 6.9072e-05 | deg |
tp | 2459815.380881795889 (2022-Aug-23.88088180) | 0.0008122 | TDB |
period | 4219.207792895982 11.55 | 8.1607e-05 2.234e-07 | d yr |
n | .08532407448766657 | 1.6503e-09 | deg/d |
Q | 5.249364728315673 | 6.7688e-08 | au |
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| | Orbit Determination Parameters
Additional Information
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Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
8.91 |
|
n/a |
E2021B10 |
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diameter |
diameter |
88.574 |
km |
1.796 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
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rotation period |
rot_per |
10.212 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Molnar, L.A.; Haegert, M.J.; Hoogenboom, K.M. (2008) Minor Planet Bull. 35, 82-84.] [Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.] [Stephens, R.D. Warner, B.D. (2017) Minor Planet Bull. 44, 312-316.] [Stephens, R.D.; Warner, B.D. (2019) Minor Planet Bull. 46, 73-75.] [Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 43-46.] |
geometric albedo |
albedo |
0.068 |
|
0.009 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
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2920 Automedon (1981 JR) Discovered 1981-May-03 by Bowell, E. at Flagstaff (AM) |
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory. |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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