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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 40 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1695552885909357 | 3.9297e-08 | |
a | 3.089431762137787 | 1.1355e-08 | au |
q | 2.565602268126512 | 1.2369e-07 | au |
i | 6.431994780451404 | 4.4203e-06 | deg |
node | 127.1816270821434 | 3.7595e-05 | deg |
peri | 184.3863360475689 | 3.9884e-05 | deg |
M | 319.3062917777115 | 1.5383e-05 | deg |
tp | 2459224.702836976048 (2021-Jan-10.20283698) | 8.5169e-05 | TDB |
period | 1983.427533084085 5.43 | 1.0935e-05 2.994e-08 | d yr |
n | .18150398438819 | 1.0007e-09 | deg/d |
Q | 3.613261256149063 | 1.328e-08 | au |
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| | Orbit Determination Parameters
Additional Information
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Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
7.6 |
|
n/a |
MPO473761 |
IRAS observations used: 23 |
diameter |
diameter |
85.734 |
km |
1.961 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
rotation period |
rot_per |
27.066 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Galad, A.; Vilagi, J.; Kornos, L.; Gajdos, S. (2009) Minor Planet Bull. 36, 116-118.] [Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] |
geometric albedo |
albedo |
0.205 |
|
0.010 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
B-V |
BV |
0.838 |
|
0.025 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=3; phase (min.=2.98, mean=5.97, max.=11.64) deg. |
U-B |
UB |
0.363 |
|
0.049 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=3; phase (min.=2.98, mean=5.97, max.=11.64) deg. |
Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 2 color indices |
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) |
|
100 Hekate (A868 NA) Discovered 1868-Jul-11 by Watson, J. C. at Ann Arbor |
Independent discovery July 18 by C. Wolf, Paris, was announced first. |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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