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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 109 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .2221724527113322 | 3.2873e-08 | |
| a | 2.358703050575911 | 5.6512e-09 | au |
| q | 1.834664208611759 | 7.8046e-08 | au |
| i | 8.055899174740569 | 3.6111e-06 | deg |
| node | 233.7018770423547 | 2.595e-05 | deg |
| peri | 57.96531455549325 | 2.7024e-05 | deg |
| M | 21.07501116432047 | 8.5887e-06 | deg |
| tp | 2458923.040686692381
(2020-Mar-14.54068669) | 3.1462e-05 | TDB |
| period | 1323.147711444735
3.62 | 4.7552e-06
1.302e-08 | d
yr |
| n | .2720784662862158 | 9.7781e-10 | deg/d |
| Q | 2.882741892540063 | 6.9067e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.1 |
|
n/a |
MPO473764 |
IRAS observations used: 20 |
| magnitude slope |
G |
0.11 |
|
n/a |
PDS3 (MPC 17258) |
Fit |
| diameter |
diameter |
52.95 |
km |
2.6 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 20 |
| rotation period |
rot_per |
8.545 |
h |
n/a |
LCDB (Rev. 2019-August); Warner et al., 2009 |
Published Reference List:
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Behrend, R. (2004) 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] |
| geometric albedo |
albedo |
0.0602 |
|
0.006 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 20 |
| B-V |
BV |
0.698 |
|
0.017 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=5; phase (min.=5.27, mean=10.83, max.=21.41) deg. |
| U-B |
UB |
0.380 |
|
0.052 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=5; phase (min.=5.27, mean=10.83, max.=21.41) deg. |
| Tholen spectral type |
spec_T |
CX |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 2 color indices |
| SMASSII spectral type |
spec_B |
Ch |
|
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) |
|
| 284 Amalia (A889 KA) Discovered 1889-May-29 by Charlois, A. at Nice |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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