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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 43 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1317382182153103 | 1.6556e-08 | |
| a | 2.188285184927328 | 4.2556e-09 | au |
| q | 1.900004393718041 | 3.6303e-08 | au |
| i | 5.301411472486432 | 1.0434e-06 | deg |
| node | 31.35317577412052 | 9.5122e-06 | deg |
| peri | 16.61560437127802 | 1.0604e-05 | deg |
| M | 289.4038310565043 | 9.7244e-06 | deg |
| tp | 2459432.363795094308
(2021-Aug-05.86379509) | 3.217e-05 | TDB |
| period | 1182.372464159635
3.24 | 3.4491e-06
9.443e-09 | d
yr |
| n | .3044725844963482 | 8.8818e-10 | deg/d |
| Q | 2.476565976136615 | 4.8163e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
11.90 |
|
n/a |
E2021B10 |
IRAS observations used: 6 |
| magnitude slope |
G |
0.28 |
|
n/a |
PDS3 (MPC 17258) |
Fit |
| diameter |
diameter |
11.036 |
km |
0.145 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
4.348 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Taylor, R.C.; Gehrels, T.; Capen, R.C. (1976) Astron. J. 81, 778-786.]
[Durech, J. (2006) IAU 2006, poster paper.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.] |
| geometric albedo |
albedo |
0.226 |
|
0.044 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| B-V |
BV |
0.918 |
|
0.023 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=5; phase (min.=6.59, mean=14.10, max.=21.70) deg. |
| U-B |
UB |
0.530 |
|
0.045 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=5; phase (min.=6.59, mean=12.63, max.=21.03) deg. |
| Tholen spectral type |
spec_T |
SU |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 2 color indices; used ground-based radiometric albedo |
| SMASSII spectral type |
spec_B |
S |
|
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) |
|
| 281 Lucretia (A888 UC) Discovered 1888-Oct-31 by Palisa, J. at Vienna |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
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Alternate Designations
| A888 UC = 1948 EK = 1984 JX = A906 FD |
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