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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 114 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .08398302045834001 | 3.1482e-08 | |
| a | 2.719651839220564 | 5.2703e-09 | au |
| q | 2.491247263167741 | 8.626e-08 | au |
| i | 6.605436045868767 | 3.1463e-06 | deg |
| node | 147.5983612148953 | 3.0772e-05 | deg |
| peri | 87.79270653953633 | 3.6193e-05 | deg |
| M | 170.6230368635759 | 1.9821e-05 | deg |
| tp | 2458424.067761378067
(2018-Nov-01.56776138) | 8.9601e-05 | TDB |
| period | 1638.20554974289
4.49 | 4.7619e-06
1.304e-08 | d
yr |
| n | .2197526434069892 | 6.3877e-10 | deg/d |
| Q | 2.948056415273387 | 5.7129e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
7.63 |
|
n/a |
E2021B10 |
IRAS observations used: 19 |
| magnitude slope |
G |
0.07 |
|
n/a |
PDS3 (MPC 17257) |
Fit |
| diameter |
diameter |
202.327 |
km |
2.168 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
5.699 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Harris, A.W.; Young, J. (1979) Icarus 38, 100-105.]
[Debehogne, H.; Zappala, V. (1980) Astron. Astrophys. Suppl. Ser. 40, 257-258.]
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1987) Icarus 70, 191-245.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1988) Icarus 76, 19-77.]
[Taylor, R.C.; Birch, P.V.; Pospieszalska-Surdej, A.; Surdej, J. (1988) Icarus 73, 314-323.]
[Gil-Hutton, R. (1989) Minor Planet Bull. 16, 16-17.]
[Magnusson, P. (1990) Icarus 85, 229-240.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1991) Icarus 89, 44-64.]
[De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.]
[Behrend, R. (1998) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Harris, A.W.; Young, J.W.; Bowell, E.; Tholen, D.J. (1999) Icarus 142, 173-201.]
[Lopez-Gonzalez, M.J.; Rodriguez, E. (1999) Astron. Astrophys. Suppl. Ser. 139, 565-574.]
[Kaasalainen, M.; Torppa, J.; Piironen, J. (2002) Icarus 159, 369-395.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
[Behrend, R. (2014) 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.]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.] |
| geometric albedo |
albedo |
0.045 |
|
0.006 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| B-V |
BV |
0.676 |
|
0.018 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=22; phase (min.=.00, mean=13.63, max.=22.83) deg. |
| U-B |
UB |
0.274 |
|
0.030 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=12; phase (min.=3.02, mean=12.35, max.=20.20) deg. |
| Tholen spectral type |
spec_T |
FC |
|
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) |
|
| 45 Eugenia (A857 MA) Discovered 1857-Jun-27 by Goldschmidt, H. at Paris |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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