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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 93 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .2032777311345216 | 1.978e-08 | |
a | 2.424564028450719 | 2.6758e-09 | au |
q | 1.931704153756881 | 4.8104e-08 | au |
i | 14.73973322230174 | 2.1875e-06 | deg |
node | 138.6429161601039 | 1.121e-05 | deg |
peri | 239.7076643355841 | 1.2984e-05 | deg |
M | 242.9448206315876 | 7.4226e-06 | deg |
tp | 2459648.870516769641 (2022-Mar-10.37051677) | 2.8739e-05 | TDB |
period | 1378.951251093707 3.78 | 2.2827e-06 6.25e-09 | d yr |
n | .2610679672065768 | 4.3218e-10 | deg/d |
Q | 2.917423903144556 | 3.2197e-09 | au |
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| | Orbit Determination Parameters
Additional Information
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[ show covariance matrix ]
Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
5.65 |
|
n/a |
E2021B10 |
IRAS observations used: 18 |
magnitude slope |
G |
0.24 |
|
n/a |
PDS3 (MPC 17257) |
Fit |
diameter |
diameter |
185.18 |
km |
2.9 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 18 |
rotation period |
rot_per |
7.2745 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Ahmad, I.I. (1954) Astrophys. J. 120, 551-560.] [Yang, X.-y.; Zhang, Y.-y.; Li, X.-q. (1965) Acta Astron. Sin. 13, 66-74.] [Gehrels, T.; Taylor, R.C. (1977) Astron. J. 82, 229-237.] [Di Martino, M.; Cacciatori, S. (1984) Icarus 60, 75-82.] [Magnusson, P. (1986) Icarus 68, 1-39.] [Gil Hutton, R.; Blain, A. (1988) Minor Planet Bull. 15, 3-4.] [Michalowski, T. (1988) Acta Astronomica 38, 455-468.] [De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.] [Dotto, E.; De Angelis, G.; Di Martino, M.; Barucci, M.A.; et al. (1995) Icarus 117, 313-327.] [Riccioli, D.; Blanco, C.; Cigna, M. (2001) Planet. Space Sci. 49, 657-671.] [Torppa, J.; Kaasalainen, M.; Michalowski, T.; Kwiatkowski, T.; et al. (2003) Icarus 164, 346-383.] [Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.] [Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.] [Marset, M.; Carry, B.; Dumas, C.; Hanus, J.; et al. (2017) Astron. Astrophys. 604, A64.] [Cellino, A.; Hestroffer, D.; Lu, X.-P.; Muinonen, K.; Tanga, P. (2019) Astron. Astrophys. 631, A67.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] |
geometric albedo |
albedo |
0.2679 |
|
0.008 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 18 |
B-V |
BV |
0.822 |
|
0.015 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=27; phase (min.=1.33, mean=14.50, max.=28.87) deg. |
U-B |
UB |
0.399 |
|
0.019 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=24; phase (min.=1.33, mean=14.33, max.=28.87) 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 |
S |
|
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) |
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6 Hebe (A847 NA) Discovered 1847-Jul-01 by Hencke, K. L. at Driesen |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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