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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .09518318232590958 | 3.3848e-08 | |
| a | 2.258931338179765 | 7.3205e-09 | au |
| q | 2.043919064756089 | 7.6835e-08 | au |
| i | 6.374737491260018 | 3.5165e-06 | deg |
| node | 263.1624344335866 | 3.9008e-05 | deg |
| peri | 146.5227335353086 | 4.4937e-05 | deg |
| M | 319.8071279628584 | 2.244e-05 | deg |
| tp | 2459138.952088772920
(2020-Oct-16.45208877) | 7.7423e-05 | TDB |
| period | 1240.089335049067
3.40 | 6.0281e-06
1.65e-08 | d
yr |
| n | .2903016660374357 | 1.4112e-09 | deg/d |
| Q | 2.47394361160344 | 8.0173e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
13.9 |
|
n/a |
MPO384781 |
|
| 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 |
|
|
