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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 51 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .2111043707874678 | 3.04e-08 | |
| a | 3.098141832917003 | 1.153e-08 | au |
| q | 2.444110550668727 | 9.5397e-08 | au |
| i | 21.94045919430114 | 3.8679e-06 | deg |
| node | 129.2318812190796 | 9.0363e-06 | deg |
| peri | 261.4925724939375 | 1.2912e-05 | deg |
| M | 321.778037138228 | 1.0646e-05 | deg |
| tp | 2459411.975887430793
(2021-Jul-16.47588743) | 5.9298e-05 | TDB |
| period | 1991.821292653413
5.45 | 1.1119e-05
3.044e-08 | d
yr |
| n | .1807391061275505 | 1.009e-09 | deg/d |
| Q | 3.75217311516528 | 1.3965e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Orbital Elements at Epoch 2456415.5 (2013-May-03.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .2167348429848747 | 3.0539e-08 | |
| q | 2.422969630863397 | 9.6352e-08 | au |
| tp | 2455433.346625362449
(2010-Aug-24.84662536) | 5.4086e-05 | TDB |
| node | 129.4725870550334 | 9.0851e-06 | deg |
| peri | 261.3584893227062 | 1.2722e-05 | deg |
| i | 21.9013428706391 | 3.8643e-06 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
9.326113823830718E-16 |
-2.930814809362712E-15 |
-6.184595227466748E-14 |
8.368473106244427E-16 |
1.644832927489913E-14 |
7.983434114978654E-16 |
| q |
-2.930814809362712E-15 |
9.283734379765207E-15 |
1.734247802678612E-13 |
-3.336663055144275E-15 |
-4.626526826390716E-14 |
-2.087513506293248E-15 |
| tp |
-6.184595227466748E-14 |
1.734247802678612E-13 |
2.925309052867608E-9 |
4.030134021207157E-12 |
4.929454584251087E-10 |
2.723135360571253E-12 |
| node |
8.368473106244427E-16 |
-3.336663055144275E-15 |
4.030134021207157E-12 |
8.253973201660514E-11 |
-7.563752978944223E-11 |
-8.360123194638722E-12 |
| peri |
1.644832927489913E-14 |
-4.626526826390716E-14 |
4.929454584251087E-10 |
-7.563752978944223E-11 |
1.618430345588198E-10 |
8.232996384241899E-12 |
| i |
7.983434114978654E-16 |
-2.087513506293248E-15 |
2.723135360571253E-12 |
-8.360123194638722E-12 |
8.232996384241899E-12 |
1.49327679957114E-11 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.72 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
36.28 |
km |
1.1 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 6 |
| rotation period |
rot_per |
7.932 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Higgins, D.J. (2011) http://www.david-higgins.com/Astronomy/asteroid/lightcurves.htm]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] |
| geometric albedo |
albedo |
0.0643 |
|
0.004 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 6 |
|
| 1312 Vassar (1933 OT) Discovered 1933-Jul-27 by Van Biesbroeck, G. at Williams Bay |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
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Alternate Designations
| 1933 OT = 1944 QE = 2019 FN5 = A908 CD |
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