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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 89 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .173777475385555 | 4.4952e-08 | |
| a | 2.209247906312363 | 5.3357e-09 | AU |
| q | 1.825330382652577 | 9.845e-08 | AU |
| i | 4.103113349972597 | 5.3023e-06 | deg |
| node | 253.168265749323 | 6.1142e-05 | deg |
| peri | 129.5503398338928 | 6.2753e-05 | deg |
| M | 113.1185140705469 | 1.459e-05 | deg |
| tp | 2456023.625897003512
(2012-Apr-06.12589700) | 4.8462e-05 | JED |
| period | 1199.402928808996
3.28 | 4.3451e-06
1.19e-08 | d
yr |
| n | .3001493421043077 | 1.0874e-09 | deg/d |
| Q | 2.593165429972148 | 6.2629e-09 | 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 |
11.46 |
mag |
n/a |
PDS3 (MPC 17260) |
|
| diameter |
diameter |
12.2 |
km |
n/a |
n/a |
Yeomans E-mail 2001-Apr-04 |
| extent |
extent |
18.2x10.5x8.9 |
km |
n/a |
Thomas, P.C. et al. (1994) Icarus v.107, pp.23-36 |
|
| rotation period |
rot_per |
7.042 |
h |
n/a |
Asteroid Lightcurve DataBase (Rev. 2013-May-01) |
Published Reference List:
[Barucci, M.A.; Fulchignoni, M.; Di Martino, M. (1989) Bul. Amer. Astron. Soc. 21, 963.]
[Di Martino, M.; Ferreri, W.; Fulchignoni, M.; De Angelis, G.; et al. (1990) Icarus 87, 372-376.]
[Goldader, J.D.; Tholen, D.J.; Cruikshank, D.P.; Hartmann, W.K. (1991) Astron. J. 102, 1503-1509.]
[De Angelis, G. (1992) in Physical properties of small solar system bodies. A. Brahic, J.-C. Gerard, J. Surdej, eds. Universite de Liege, Institut d'Astrophysique, Liege, pp. 195-201.]
[Magnusson, P.; Barucci, M.A.; Binzel, R.P.; Blanco, C.; et al. (1992) Icarus 97, 124-129.]
[Wisniewski, W.Z.; Barucci, M.A.; Fulchignoni, M.; De Sanctis, C.; et al. (1993) Icarus 101, 213-222.]
[De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.]
[Kaasalainen, M.; Torppa, J.; Muinonen, K. (2001) Icarus 153, 37-51.]
[Tungalag, N.; Shevchenko, V.G.; Lupishko, D.F. (2002) Kin. Fiz. Neb. Tel 18, 508-516; Kinematics and Physics of Celestial Bodies 18, ???-???.] |
| B-V |
BV |
.870 |
mag |
.030 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 |
#obs=1; phase=19.53 deg. |
| U-B |
UB |
.554 |
mag |
.049 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 |
#obs=1; phase=19.53 deg. |
| Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices |
| SMASSII spectral type |
spec_B |
S |
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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) |
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| 951 Gaspra (1916 S45) Discovered 1916-Jul-30 by Neujmin, G. at Simeis (094) |
| Discovered at Simeis during the First World War while Simeis was not in communication with the Rechen-Institut for long periods of time were given provisional designations containing the Greek letter SIGMA. These are here abbreviated S. |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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Alternate Designations
| 1916 S45 = 1955 MG1 = A913 YA |
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