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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 38 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1800130250649896 | 3.4885e-08 | |
| a | 2.333536421827699 | 8.5438e-09 | au |
| q | 1.913469471435164 | 8.0598e-08 | au |
| i | 8.572277549492087 | 4.0648e-06 | deg |
| node | 45.33407447483357 | 2.0328e-05 | deg |
| peri | 192.8996529875551 | 2.2132e-05 | deg |
| M | 239.0991574972967 | 9.7844e-06 | deg |
| tp | 2459437.767428987328
(2021-Aug-11.26742899) | 3.6447e-05 | TDB |
| period | 1302.027936090837
3.56 | 7.1507e-06
1.958e-08 | d
yr |
| n | .2764917633648104 | 1.5185e-09 | deg/d |
| Q | 2.753603372220236 | 1.0082e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
13.4 |
|
n/a |
MPO502184 |
|
| diameter |
diameter |
10.831 |
km |
0.061 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
9.23645 |
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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] |
| geometric albedo |
albedo |
0.081 |
|
0.012 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
|
| 3275 Oberndorfer (1982 HE1) Discovered 1982-Apr-25 by Bowell, E. at Flagstaff (AM) |
| Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory. |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| 1982 HE1 = 1939 FJ = 1964 EE |
|
|
