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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 46 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .08374108674295686 | 3.6322e-08 | |
| a | 3.019680753965996 | 1.2092e-08 | au |
| q | 2.766809406012092 | 1.0778e-07 | au |
| i | 10.90178488640439 | 3.9848e-06 | deg |
| node | 147.2763294358862 | 2.1046e-05 | deg |
| peri | 190.1067849100856 | 3.2029e-05 | deg |
| M | 116.1677792495537 | 2.455e-05 | deg |
| tp | 2458382.023560997507
(2018-Sep-20.52356100) | 0.00013074 | TDB |
| period | 1916.637465906907
5.25 | 1.1512e-05
3.152e-08 | d
yr |
| n | .1878289485641754 | 1.1282e-09 | deg/d |
| Q | 3.2725521019199 | 1.3104e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.0 |
|
n/a |
MPO502159 |
IRAS observations used: 8 |
| diameter |
diameter |
33.387 |
km |
0.538 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
11.730 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2006) Minor Planet Bull. 33, 85-88.]
[Pilcher, F. (2016) Minor Planet Bull. 43, 222-224.] |
| geometric albedo |
albedo |
0.203 |
|
0.025 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| B-V |
BV |
0.765 |
|
0.035 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=2; phase (min.=6.34, mean=8.15, max.=9.95) deg. |
| U-B |
UB |
0.445 |
|
0.035 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=2; phase (min.=6.34, mean=8.15, max.=9.95) deg. |
| Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 2 color indices; used ground-based radiometric albedo |
| SMASSII spectral type |
spec_B |
S |
|
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) |
|
| 633 Zelima (A907 JH) Discovered 1907-May-12 by Kopff, A. at Heidelberg |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| A907 JH = 1939 ND = A918 OA |
|
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