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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 43 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1675172791050317 | 3.2113e-08 | |
a | 3.137618334661179 | 1.0585e-08 | au |
q | 2.612013048368678 | 1.0306e-07 | au |
i | 2.659582911247124 | 3.3971e-06 | deg |
node | 92.77942398964028 | 7.9864e-05 | deg |
peri | 324.4957501111097 | 8.0522e-05 | deg |
M | 322.1001023156277 | 9.7401e-06 | deg |
tp | 2459214.214571778596 (2020-Dec-30.71457178) | 5.4913e-05 | TDB |
period | 2030.011966813805 5.56 | 1.0273e-05 2.813e-08 | d yr |
n | .1773388560684379 | 8.9739e-10 | deg/d |
Q | 3.66322362095368 | 1.2358e-08 | 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 |
9.9 |
|
n/a |
MPO502156 |
IRAS observations used: 10 |
diameter |
diameter |
43.482 |
km |
0.475 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
rotation period |
rot_per |
6.4 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Tedesco, E.F. (1979) PhD Dissertation, New. Mex. State Univ. 280pp.] [Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.] |
geometric albedo |
albedo |
0.040 |
|
0.012 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N) |
|
B-V |
BV |
0.682 |
|
0.040 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=4; phase (min.=4.18, mean=11.79, max.=18.24) deg. |
U-B |
UB |
0.352 |
|
0.042 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=4; phase (min.=4.18, mean=11.79, max.=18.24) deg. |
Tholen spectral type |
spec_T |
B |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices; used ground-based radiometric albedo |
SMASSII spectral type |
spec_B |
B |
|
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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383 Janina (A894 BC) Discovered 1894-Jan-29 by Charlois, A. at Nice |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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Alternate Designations
A894 BC = 1925 QC = 1936 QQ1 = 1936 RO |
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