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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 39 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .04756290661129741 | 3.5282e-08 | |
a | 3.100950762213112 | 1.2407e-08 | au |
q | 2.953460530703738 | 1.1245e-07 | au |
i | 13.27137286242597 | 3.9844e-06 | deg |
node | 245.6552191466734 | 1.5527e-05 | deg |
peri | 54.0110463646024 | 4.1793e-05 | deg |
M | 348.9627934867589 | 3.8113e-05 | deg |
tp | 2459061.650132206610 (2020-Jul-31.15013221) | 0.00021116 | TDB |
period | 1994.530732751058 5.46 | 1.197e-05 3.277e-08 | d yr |
n | .1804935838233245 | 1.0833e-09 | deg/d |
Q | 3.248440993722486 | 1.2997e-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 |
9.7 |
|
n/a |
MPO347525 |
|
diameter |
diameter |
69.883 |
km |
0.420 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
rotation period |
rot_per |
26.017 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Warner, B.D. (2000) Minor Planet Bull. 27, 4-6.] [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] [Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Garceran, A.C.; Aznar, A.; Mansego, E.A.; Rodriguez, P.B.; et al. (2016) Minor Planet Bull. 43, 92-97.] |
geometric albedo |
albedo |
0.040 |
|
0.005 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
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1243 Pamela (1932 JE) Discovered 1932-May-07 by Jackson, C. at Johannesburg (UO) |
Subsequently reported as discovered on Apr. 4 by E. L. Johnson. |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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[ show close-approach data ]
Alternate Designations
1932 JE = 1929 XD = 1934 VL = 1951 AN = 1954 JO |
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