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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 113 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1333227447023434 | 2.6316e-08 | |
| a | 2.470964688686002 | 3.0678e-09 | au |
| q | 2.141528894327813 | 6.4849e-08 | au |
| i | 5.592660718860978 | 2.8698e-06 | deg |
| node | 125.5396833138738 | 2.5786e-05 | deg |
| peri | 135.974134971005 | 2.7265e-05 | deg |
| M | 45.07427507788044 | 9.7002e-06 | deg |
| tp | 2458822.866658449915
(2019-Dec-05.36665845) | 3.8096e-05 | TDB |
| period | 1418.725045439768
3.88 | 2.6421e-06
7.234e-09 | d
yr |
| n | .2537489566122442 | 4.7256e-10 | deg/d |
| Q | 2.800400483044191 | 3.4768e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
7.7 |
|
n/a |
MPO492748 |
IRAS observations used: 10 |
| diameter |
diameter |
84.899 |
km |
2.027 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
12.27048 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
sidereal period (not synodic)
Published Reference List:
[Groeneveld, I.; Kuiper, G.P. (1954) Astrophys. J. 120, 200-220.]
[Michalowski, T.; Velichko, F.P.; Di Martino, M.; Krugly, et al. (1995) Icarus 118, 292-301.]
[Torppa, J.; Kaasalainen, M.; Michalowski, T.; Kwiatkowski, T.; et al. (2003) Icarus 164, 346-383.]
[Behrend, R. (2007) 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.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] |
| geometric albedo |
albedo |
0.193 |
|
0.028 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| B-V |
BV |
0.829 |
|
0.022 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=25; phase (min.=.64, mean=7.44, max.=23.88) deg. |
| U-B |
UB |
0.438 |
|
0.035 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=23; phase (min.=.64, mean=7.45, max.=23.88) deg. |
| Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices; used ground-based radiometric albedo |
| SMASSII spectral type |
spec_B |
Sl |
|
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) |
|
| 17 Thetis (A852 HA) Discovered 1852-Apr-17 by Luther, R. at Dusseldorf |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
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Alternate Designations
| A852 HA = 1954 SO1 = A913 CA = A916 YF |
|
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