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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 56 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1761898235460377 | 3.1462e-08 | |
a | 2.722686477818209 | 7.3213e-09 | au |
q | 2.242976827720236 | 8.6282e-08 | au |
i | 5.01011919317813 | 3.8076e-06 | deg |
node | 68.89554501448256 | 4.2662e-05 | deg |
peri | 41.7656825941407 | 4.4179e-05 | deg |
M | 45.62698248044016 | 1.0882e-05 | deg |
tp | 2458792.523566875987 (2019-Nov-05.02356688) | 4.9539e-05 | TDB |
period | 1640.948225246791 4.49 | 6.6188e-06 1.812e-08 | d yr |
n | .2193853495565697 | 8.8489e-10 | deg/d |
Q | 3.202396127916183 | 8.6113e-09 | 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 |
9.3 |
|
n/a |
MPO431497 |
|
diameter |
diameter |
81.68 |
km |
4.9 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 6 |
rotation period |
rot_per |
38.780 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Kamel, L.; Lundgren, K. (1999) Minor Planet Bull. 26, 4-5.] [Fauerbach, M.; Bennett, T.; Marks, S.A. (2007) Minor Planet Bull. 34, 57-58.] [Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Mansego, E.A.; Rodriguez, P.B.; de Haro, J.L.; Chiner, O.R.; et al. (2016) Minor Planet Bull. 43, 332-336.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] |
geometric albedo |
albedo |
0.0585 |
|
0.008 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 6 |
B-V |
BV |
0.725 |
|
0.037 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=1; phase=17.75 deg. |
U-B |
UB |
0.315 |
|
0.039 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=1; phase=17.75 deg. |
Tholen spectral type |
spec_T |
XC |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 2 color indices |
SMASSII spectral type |
spec_B |
Ch |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) |
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503 Evelyn (A903 BL) Discovered 1903-Jan-19 by Dugan, R. S. at Heidelberg |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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Alternate Designations
A903 BL = 1948 BA = 1948 DA = A899 GA |
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