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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 40 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1798930091125541 | 3.9684e-08 | |
| a | 2.382181508127673 | 6.9837e-09 | au |
| q | 1.953643708378304 | 9.574e-08 | au |
| i | 25.03464223587985 | 4.6802e-06 | deg |
| node | 132.9616868173011 | 9.7884e-06 | deg |
| peri | 19.07026505381632 | 1.5868e-05 | deg |
| M | 286.884179783337 | 1.5028e-05 | deg |
| tp | 2459273.253012519664
(2021-Feb-27.75301252) | 5.6726e-05 | TDB |
| period | 1342.952649865798
3.68 | 5.9056e-06
1.617e-08 | d
yr |
| n | .2680660409255494 | 1.1788e-09 | deg/d |
| Q | 2.810719307877042 | 8.2401e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.8 |
|
n/a |
MPO502157 |
IRAS observations used: 6 |
| diameter |
diameter |
15.805 |
km |
1.158 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
10.922 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Tedesco, E.F. (1979) PhD Dissertation, New. Mex. State Univ. 280pp.]
[Stephens, R.D. (2007) Minor Planet Bull. 34, 102-103.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Buchheim, R.K. (2014) Minor Planet Bull. 41, 241-243.]
[Klinglesmith III, D.A.; Hanowell, J.; Warren, C.A. (2014) Minor Planet Bull. 41, 206-208.]
[Stephens, R.D. (2014) Minor Planet Bull. 41, 171-175.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] |
| geometric albedo |
albedo |
0.178 |
|
0.036 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| B-V |
BV |
0.870 |
|
0.020 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=3; phase (min.=16.56, mean=17.98, max.=20.44) deg. |
| U-B |
UB |
0.495 |
|
0.034 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=3; phase (min.=16.56, mean=17.98, max.=20.44) deg. |
| Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 2 color indices |
|
| 502 Sigune (A903 BM) Discovered 1903-Jan-19 by Wolf, M. at Heidelberg |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
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Alternate Designations
| A903 BM = 1925 AD = 1929 EK |
|
|
