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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 53 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1731414079505674 | 3.1282e-08 | |
| a | 2.644903699562906 | 5.7723e-09 | au |
| q | 2.18696134912692 | 8.2282e-08 | au |
| i | 3.046277816087536 | 3.8592e-06 | deg |
| node | 7.49412586338931 | 5.7825e-05 | deg |
| peri | 43.84017184149963 | 5.8782e-05 | deg |
| M | 156.650187472275 | 1.0342e-05 | deg |
| tp | 2458516.837685138476
(2019-Feb-02.33768514) | 4.4643e-05 | TDB |
| period | 1571.133985356439
4.30 | 5.1434e-06
1.408e-08 | d
yr |
| n | .2291338634103366 | 7.5011e-10 | deg/d |
| Q | 3.102846049998891 | 6.7718e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
9.54 |
|
n/a |
E2021B10 |
IRAS observations used: 17 |
| diameter |
diameter |
71.82 |
km |
5.3 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 17 |
| rotation period |
rot_per |
9.73509 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Barucci, M.A.; Fulchignoni, M.; Di Martino, M. (1989) Bull. Amer. Astron. Soc. 21, 963.]
[Di Martino, M.; Ferreri, W.; Fulchignoni, M.; De Angelis, G.; et al. (1990) Icarus 87, 372-376.]
[Riccioli, D.; Blanco, C.; Cigna, M. (2001) Planet. Space Sci. 49, 657-671.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Ditteon, R.; Hawkins, S. (2007) Minor Planet Bull. 34, 59-64.]
[Behrend, R. (2009) 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.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] |
| geometric albedo |
albedo |
0.016 |
|
0.005 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N) |
|
| B-V |
BV |
0.697 |
|
0.025 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=4; phase (min.=2.85, mean=7.08, max.=9.86) deg. |
| U-B |
UB |
0.360 |
|
0.046 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=4; phase (min.=2.85, mean=7.08, max.=9.86) deg. |
| Tholen spectral type |
spec_T |
C |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices; used ground-based radiometric albedo |
| 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) |
|
| 66 Maja (A861 GA) Discovered 1861-Apr-09 by Tuttle, H. P. at Cambridge |
| Apr. 10, given by some authorities, is the civil date. |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
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Alternate Designations
| A861 GA = 1947 FO = 1974 KR = 1992 OX10 = A902 UF = A906 QD |
|
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