[ hide orbit diagram ]
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 121 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1320087627864676 | 1.7563e-08 | |
| a | 3.130964179040613 | 9.3929e-09 | au |
| q | 2.717649471436713 | 5.6178e-08 | au |
| i | 2.546680713759816 | 7.7421e-07 | deg |
| node | 100.4776684182084 | 1.3502e-05 | deg |
| peri | 55.86371057674383 | 1.4658e-05 | deg |
| M | 296.966553944062 | 4.4756e-06 | deg |
| tp | 2459554.810583567567
(2021-Dec-06.31058357) | 2.5394e-05 | TDB |
| period | 2023.557620047146
5.54 | 9.106e-06
2.493e-08 | d
yr |
| n | .1779044967306701 | 8.0057e-10 | deg/d |
| Q | 3.544278886644513 | 1.0633e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
8.61 |
|
n/a |
E2021B10 |
IRAS observations used: 10 |
| diameter |
diameter |
130.808 |
km |
1.483 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| rotation period |
rot_per |
6.66535 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Behrend, R. (1977) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[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]
[Oey, J. (2006) Minor Planet Bull. 33, 96-99.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Wang, X.; Muinonen, K.; Wang, Y.; Behrend, R.; et al. (2015) Astron. Astrophys. 581, A55.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] |
| geometric albedo |
albedo |
0.076 |
|
0.009 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| B-V |
BV |
0.695 |
|
0.014 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=5; phase (min.=2.86, mean=10.12, max.=13.28) deg. |
| U-B |
UB |
0.341 |
|
0.021 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=6; phase (min.=2.86, mean=10.58, max.=13.28) 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 |
C |
|
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) |
|
| 171 Ophelia (A877 AB) Discovered 1877-Jan-13 by Borrelly, A. at Marseille |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
[ show close-approach data ]
|
