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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 86 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .2718870139086506 | 4.2257e-08 | |
| a | 2.680938165656374 | 7.4277e-09 | au |
| q | 1.952025893322327 | 1.1413e-07 | au |
| i | 12.95920044251286 | 4.209e-06 | deg |
| node | 328.801553627617 | 2.0057e-05 | deg |
| peri | 258.1911094845331 | 2.1526e-05 | deg |
| M | 340.3112841941804 | 1.0334e-05 | deg |
| tp | 2459088.188675918249
(2020-Aug-26.68867592) | 4.6139e-05 | TDB |
| period | 1603.35105864236
4.39 | 6.6633e-06
1.824e-08 | d
yr |
| n | .2245297422916417 | 9.3311e-10 | deg/d |
| Q | 3.409850437990421 | 9.4472e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
8.2 |
|
n/a |
MPO502158 |
IRAS observations used: 8 |
| diameter |
diameter |
65.144 |
km |
0.380 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
7.4842 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Lagerkvist, C.-I.; Hahn, G.; Magnusson, P.; Rickman, H. (1987) Astron. Astrophys. Suppl. Ser. 70, 21-32.]
[Michalowski, T.; Pych, W.; Berthier, J.; Kryszczynska, A.; et al. (2000) Astron. Astrophys. Suppl. Ser. 146, 471-479.]
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] |
| geometric albedo |
albedo |
0.202 |
|
0.015 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| B-V |
BV |
0.736 |
|
0.018 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=7; phase (min.=3.91, mean=10.61, max.=27.13) deg. |
| U-B |
UB |
0.265 |
|
0.045 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=6; phase (min.=3.91, mean=11.35, max.=27.13) deg. |
| Tholen spectral type |
spec_T |
M |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 2 color indices; used ground-based radiometric albedo |
| SMASSII spectral type |
spec_B |
X |
|
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) |
|
| 516 Amherstia (A903 SG) Discovered 1903-Sep-20 by Dugan, R. S. at Heidelberg |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
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