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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1962688763527819 | 2.9361e-08 | |
a | 2.236222156595578 | 4.9073e-09 | au |
q | 1.797321346645369 | 6.6078e-08 | au |
i | 3.646335369975023 | 3.2968e-06 | deg |
node | 235.202223557375 | 5.2274e-05 | deg |
peri | 80.72859293698907 | 5.2925e-05 | deg |
M | 115.9346611792864 | 8.8387e-06 | deg |
tp | 2458807.147746580375 (2019-Nov-19.64774658) | 2.9616e-05 | TDB |
period | 1221.436365886108 3.34 | 4.0206e-06 1.101e-08 | d yr |
n | .2947349612755577 | 9.7017e-10 | deg/d |
Q | 2.675122966545786 | 5.8704e-09 | 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 |
12.04 |
|
n/a |
E2021B10 |
|
diameter |
diameter |
10.95 |
km |
0.9 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 2 |
rotation period |
rot_per |
50.40 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Stephens, R.D. (2007) Minor Planet Bull. 34, 14-15.] [Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.] [Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.] [Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.] |
geometric albedo |
albedo |
0.2807 |
|
0.050 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 2 |
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685 Hermia (A909 PC) Discovered 1909-Aug-12 by Lorenz, W. at Heidelberg |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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