| 65803 Didymos (1996 GT) |
| Classification: Apollo [NEO, PHA] SPK-ID: 2065803 |
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| 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 103 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .3837841011681173 | 8.6952e-09 | |
| a | 1.644370085038667 | 1.4804e-08 | AU |
| q | 1.013286989964361 | 1.2748e-08 | AU |
| i | 3.408043188649716 | 2.344e-06 | deg |
| node | 73.24011095406232 | 1.5045e-05 | deg |
| peri | 319.243238095083 | 1.5917e-05 | deg |
| M | 176.4174211049835 | 2.2408e-05 | deg |
| tp | 2456023.069713856984
(2012-Apr-05.56971386) | 4.2858e-05 | JED |
| period | 770.1898268347809
2.11 | 1.0401e-05
2.848e-08 | d
yr |
| n | .4674172359293266 | 6.3121e-09 | deg/d |
| Q | 2.275453180112972 | 2.0486e-08 | 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 |
17.944 |
mag |
.54972 |
103 |
autocmod 2.5c |
| rotation period |
rot_per |
2.2593 |
h |
n/a |
Asteroid Lightcurve DataBase (Rev. 2013-May-01) |
Published Reference List:
[Pravec, P.; et al. (2003) IAUC 8244. (65803)]
[Kitazato, K.; Abe, M.; Mito, H. (2005) Asia-Oceana Geophys. Soc. abstract 58-PS-A1183.]
[Pravec, P.; et al. (2006) Icarus 181, 63-93.] |
| SMASSII spectral type |
spec_B |
Xk |
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n/a |
Binzel et al. (2004) Meteorit. Planet. Sci. 39, 351-366 |
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| 65803 Didymos | Discovered 1996 Apr. 11 by Spacewatch at Kitt Peak. |
| Greek for "twin", this rapid-rotator Amor possesses a satellite with an orbital period of 11.9 hr. Suspicions arose in the Goldstone delay-Doppler echoes, and these were confirmed with the optical light curve analysis, along with Arecibo radar imaging on 2003 Nov. 23. The name was suggested by J. Montani. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20040713/MPCPages.arc | Last Updated: 2004-07-14 |
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[ show close-approach data ]
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