| 5145 Pholus (1992 AD) |
| Classification: Centaur SPK-ID: 2005145 |
[ hide orbit diagram ]
| Orbit Diagram
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| Note:
Make sure you have Java enabled on your browser to see the applet.
This applet is provided as a 3D orbit visualization tool.
The applet was implemented using 2-body methods,
and hence should not be used for determining accurate long-term trajectories
(over several years or decades) or planetary encounter circumstances.
For accurate long-term ephemerides, please instead use our Horizons system. |
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Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.
Orbit Viewer applet originally written and kindly provided by
Osamu Ajiki (AstroArts),
and further modified by
Ron Baalke (JPL).
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Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .5739699588983016 | 1.4492e-06 | |
| a | 20.29699134573153 | 8.0622e-05 | AU |
| q | 8.647128057262819 | 8.2169e-06 | AU |
| i | 24.72595867996509 | 1.881e-05 | deg |
| node | 119.2671172231913 | 5.6778e-05 | deg |
| peri | 354.7395262286689 | 0.00014586 | deg |
| M | 84.83754967906569 | 0.00053312 | deg |
| tp | 2448529.470457740521
(1991-Sep-29.97045774) | 0.0028186 | JED |
| period | 33399.95846099522
91.44 | 0.199
0.0005448 | d
yr |
| n | .0107784565187532 | 6.422e-08 | deg/d |
| Q | 31.94685463420024 | 0.0001269 | AU |
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| | Orbit Determination Parameters
Additional Information
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[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
7.0 |
mag |
n/a |
PDS3 (MPC 28113) |
|
| diameter |
diameter |
190 |
km |
26 |
Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002) |
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| rotation period |
rot_per |
9.980 |
h |
n/a |
Asteroid Lightcurve DataBase (Rev. 2013-May-01) |
Published Reference List:
[Buie, M.W.; Bus, S.J. (1992) Icarus 100, 288-294.]
[Hoffmann, M.; Fink, U.; Grundy, W.M. (1992) in Observations and Physical Properties of Small Solar System Bodies. A. Brahic, J.-C. Gerard, J. Surdej, eds. Universite de Liege, Institut d'Astrophysique, Liege, pp. 203-208.]
[Farnham, T.L. (2001) Icarus 152, 238-245.]
[Tegler, S.C.; Romanishin, W.; Consolmagno, G.J.; Rall, J.; et al. (2005) Icarus 175, 390-396.] |
| geometric albedo |
albedo |
0.044 |
|
0.013 |
Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002) |
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| Tholen spectral type |
spec_T |
Z |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 3 color indices |
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| 5145 Pholus (1992 AD) Discovered 1992-Jan-09 by Spacewatch at Kitt Peak |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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