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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 | .09531059555082216 | 1.044e-08 | |
| a | 2.259219191858847 | 5.9662e-09 | au |
| q | 2.043891665202933 | 2.477e-08 | au |
| i | 6.374571998232675 | 4.2167e-07 | deg |
| node | 263.1639355778046 | 7.4997e-06 | deg |
| peri | 146.5459681979893 | 1.1714e-05 | deg |
| M | 17.84466362706088 | 1.014e-05 | deg |
| tp | 2459139.018869441679
(2020-Oct-16.51886944) | 3.4956e-05 | TDB |
| period | 1240.326377877542
3.40 | 4.9132e-06
1.345e-08 | d
yr |
| n | .2902461855370965 | 1.1497e-09 | deg/d |
| Q | 2.474546718514761 | 6.5348e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
13.98 |
|
n/a |
MPCxxxxx |
|
| diameter |
diameter |
3.628 |
km |
0.167 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| rotation period |
rot_per |
4.902 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Hasegawa, S.; Miyasaka, S.; Yoshizumi, C.; Sekiguchi, T.; et al. (2012) arXiv:1204.0548.] |
| geometric albedo |
albedo |
0.444 |
|
0.076 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| SMASSII spectral type |
spec_B |
V |
|
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) |
|
| 3307 Athabasca (1981 DE1) Discovered 1981-Feb-28 by Bus, S. J. at Siding Spring |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| 1981 DE1 = 1977 AS = 2003 WM33 |
|
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