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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 37 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1946186284198604 | 2.3344e-08 | |
| a | 2.729080779501325 | 8.0118e-09 | au |
| q | 2.197950821347774 | 6.3242e-08 | au |
| i | 14.43214127308051 | 4.3146e-07 | deg |
| node | 325.3438538135795 | 3.4554e-06 | deg |
| peri | 31.09460841555107 | 5.8339e-06 | deg |
| M | 168.2192847727901 | 5.1996e-06 | deg |
| tp | 2458431.021846074031
(2018-Nov-08.52184607) | 2.2021e-05 | TDB |
| period | 1646.732333855198
4.51 | 7.2515e-06
1.985e-08 | d
yr |
| n | .2186147636739462 | 9.6268e-10 | deg/d |
| Q | 3.260210737654877 | 9.571e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
11.05 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
30.819 |
km |
0.553 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| rotation period |
rot_per |
22.027 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Holliday, B. (2001) Minor Planet Bull. 28, 22.]
[Warner, B.D. (2001) Minor Planet Bull. 28, 4-5.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[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.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] |
| geometric albedo |
albedo |
0.081 |
|
0.011 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| SMASSII spectral type |
spec_B |
Cgh |
|
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) |
|
| 706 Hirundo (A910 TF) Discovered 1910-Oct-09 by Helffrich, J. at Heidelberg |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| A910 TF = 1948 AE = 1957 DA = 1977 QB = A924 WD |
|
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