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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 | .1597225233785383 | 7.5065e-09 | |
| a | 2.228749236524024 | 3.853e-09 | au |
| q | 1.872767784488416 | 1.7671e-08 | au |
| i | 1.747957935109256 | 4.9726e-07 | deg |
| node | 121.5646233682999 | 2.3305e-05 | deg |
| peri | 252.5090845070748 | 2.4333e-05 | deg |
| M | 26.5593247222838 | 5.7013e-06 | deg |
| tp | 2459110.838754794059
(2020-Sep-18.33875479) | 1.9219e-05 | TDB |
| period | 1215.318861140199
3.33 | 3.1515e-06
8.628e-09 | d
yr |
| n | .296218557541559 | 7.6813e-10 | deg/d |
| Q | 2.584730688559631 | 4.4684e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
12.61 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
8.196 |
km |
0.100 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
4.5385 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Pilcher, F. (2011) Minor Planet Bull. 38, 50-52.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Dykhuis, M.J.; Molnar, L.A.; Gates, C.J.; Gonzales, J.A.; et al. (2016) Icarus 267, 174-203.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] |
| geometric albedo |
albedo |
0.379 |
|
0.046 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| B-V |
BV |
0.887 |
|
0.013 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=2; phase (min.=2.25, mean=2.72, max.=3.18) deg. |
| U-B |
UB |
0.463 |
|
0.051 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=2; phase (min.=2.25, mean=2.72, max.=3.18) deg. |
| Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices |
|
| 296 Phaetusa (A890 QB) Discovered 1890-Aug-19 by Charlois, A. at Nice |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| A890 QB = 1930 YH = A917 XB |
|
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