[ hide orbit diagram ]
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 36 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .2376007803725809 | 2.9348e-08 | |
| a | 2.57445340106622 | 8.2795e-09 | au |
| q | 1.962761263940041 | 7.9271e-08 | au |
| i | 13.64466779651399 | 5.807e-07 | deg |
| node | 216.4816958653738 | 1.5787e-06 | deg |
| peri | 129.1428174975887 | 2.8596e-06 | deg |
| M | 354.3141505875785 | 5.6633e-06 | deg |
| tp | 2459224.329714129046
(2021-Jan-09.82971413) | 2.3818e-05 | TDB |
| period | 1508.78021280609
4.13 | 7.2784e-06
1.993e-08 | d
yr |
| n | .2386033412583384 | 1.151e-09 | deg/d |
| Q | 3.186145538192399 | 1.0247e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
11.82 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
18.164 |
km |
0.109 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
139.1 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F.; Benishek, V.; Ferrero, A. (2013) Minor Planet Bull. 40, 126-129.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] |
| geometric albedo |
albedo |
0.110 |
|
0.018 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
|
| 1473 Ounas (1938 UT) Discovered 1938-Oct-22 by Vaisala, Y. at Turku |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| 1938 UT = 1950 NZ = 1950 PB1 |
|
|
