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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.
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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 80 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1475657822361136 | 4.4411e-08 | |
a | 3.04030153340728 | 1.2652e-08 | au |
q | 2.591657059396379 | 1.3595e-07 | au |
i | 17.00405115521179 | 4.8038e-06 | deg |
node | 312.9323233396066 | 1.4215e-05 | deg |
peri | 145.9838035027238 | 2.1083e-05 | deg |
M | 4.239500018248616 | 1.475e-05 | deg |
tp | 2458577.697337707993 (2019-Apr-04.19733771) | 7.9302e-05 | TDB |
period | 1936.30342959966 5.30 | 1.2087e-05 3.309e-08 | d yr |
n | .1859212737512073 | 1.1606e-09 | deg/d |
Q | 3.488946007418181 | 1.452e-08 | au |
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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 |
Notes |
absolute magnitude |
H |
8.85 |
|
n/a |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 17 |
diameter |
diameter |
105.94 |
km |
2.6 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 17 |
rotation period |
rot_per |
13.546 |
h |
n/a |
LCDB (Rev. 2019-January); Warner et al., 2009 |
Published Reference List: [Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Warner, B.D. (2009) Minor Planet Bull. 36, 109-116.] [Warner, B.D. (2010) Minor Planet Bull. 37, 127-130.] [Saylor, D.A.; Leake, M. (2012) J. Southeastern Assoc. for Research in Astron. 5, 25-28.] [Wang, X.; Muinonen, K.; Wang, Y. (2015) Planet. Space Sci. 118, 242-249.] |
geometric albedo |
albedo |
0.0454 |
|
0.002 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 17 |
B-V |
BV |
0.718 |
|
0.020 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=3; phase (min.=14.62, mean=15.90, max.=18.33) deg. |
U-B |
UB |
0.332 |
|
0.028 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=3; phase (min.=14.62, mean=15.90, max.=18.33) deg. |
Tholen spectral type |
spec_T |
XC |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices |
|
506 Marion (A903 DB) Discovered 1903-Feb-17 by Dugan, R. S. at Heidelberg |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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