[ hide orbit diagram ]
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 41 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .04697047209766465 | 3.4974e-08 | |
| a | 3.098791224205442 | 1.2644e-08 | au |
| q | 2.953239537472412 | 1.1139e-07 | au |
| i | 13.26261761424835 | 3.9297e-06 | deg |
| node | 245.5868994828056 | 1.5469e-05 | deg |
| peri | 53.21632848080431 | 4.199e-05 | deg |
| M | 25.87293457061956 | 3.8314e-05 | deg |
| tp | 2459057.304261888413
(2020-Jul-26.80426189) | 0.00021203 | TDB |
| period | 1992.447574103571
5.46 | 1.2195e-05
3.339e-08 | d
yr |
| n | .180682294821217 | 1.1059e-09 | deg/d |
| Q | 3.244342910938471 | 1.3238e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
9.74 |
|
n/a |
E2021B10 |
|
| 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) |
|
|
| 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 |
|
[ show close-approach data ]
Alternate Designations
| 1932 JE = 1929 XD = 1934 VL = 1951 AN = 1954 JO |
|
|
