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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .07845764606727533 | 2.0283e-08 | |
| a | 2.731043127179052 | 8.248e-09 | au |
| q | 2.516771912112373 | 5.755e-08 | au |
| i | 7.375100911040784 | 3.6254e-07 | deg |
| node | 194.7191124913209 | 2.6849e-06 | deg |
| peri | 18.08903032209525 | 7.2942e-06 | deg |
| M | 356.9097066002442 | 3.4919e-06 | deg |
| tp | 2459214.651043889753
(2020-Dec-31.15104389) | 1.5981e-05 | TDB |
| period | 1648.508779365019
4.51 | 7.4679e-06
2.045e-08 | d
yr |
| n | .2183791827536803 | 9.8928e-10 | deg/d |
| Q | 2.945314342245731 | 8.8951e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.17 |
|
n/a |
E2021B10 |
IRAS observations used: 9 |
| diameter |
diameter |
34.431 |
km |
0.322 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
5.945 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Brinsfield, J.W. (2007) Minor Planet Bull. 34, 108-110.]
[Fauerbach, M.; Marks, S.A.; Lucas, M.P. (2008) Minor Planet Bull. 35, 44-46.]
[Sheridan, E.E. (2009) Minor Planet Bull. 36, 55-56.]
[Kaminski, L.J.; Leake, M.A.; Berget, D.J. (2010) J. SE Assoc. for Research in Astron. 3, 25-31.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] |
| geometric albedo |
albedo |
0.165 |
|
0.025 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| B-V |
BV |
0.726 |
|
0.035 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=2; phase (min.=5.45, mean=5.58, max.=5.71) deg. |
| U-B |
UB |
0.275 |
|
0.055 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=2; phase (min.=5.45, mean=5.58, max.=5.71) 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) |
|
| 872 Holda (A917 KH) Discovered 1917-May-21 by Wolf, M. at Heidelberg |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| A917 KH = 1948 EE = 1949 OD1 = A900 SA = A913 NA = A916 AB |
|
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