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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .2210565915312918 | 4.0062e-08 | |
| a | 2.235958195189115 | 7.4691e-09 | au |
| q | 1.74168489775415 | 9.1812e-08 | au |
| i | 4.409803666094088 | 4.6933e-06 | deg |
| node | 338.3322252114234 | 3.7309e-05 | deg |
| peri | 328.3835487140803 | 3.8336e-05 | deg |
| M | 337.8326350415564 | 8.6971e-06 | deg |
| tp | 2459275.697866104072
(2021-Mar-02.19786610) | 2.9638e-05 | TDB |
| period | 1221.220106594333
3.34 | 6.1192e-06
1.675e-08 | d
yr |
| n | .2947871543025499 | 1.4771e-09 | deg/d |
| Q | 2.73023149262408 | 9.1202e-09 | au |
|
| | 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 |
15.44 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
5.400 |
km |
0.033 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| rotation period |
rot_per |
5. |
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:
[Clark, M. (2015) Minor Planet Bull. 42, 15-20.] |
| geometric albedo |
albedo |
0.043 |
|
0.008 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 30770 (1984 SL4) Discovered 1984-Sep-27 by Mrkos, A. at Klet |
| Reference: 20011130/Numbers.arc | Last Updated: 2004-04-19 |
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