(153591) 2001 SN263
compiled by Wm. Robert Johnston
last updated 14 February 2008
Orbital elements and other data (Assumed or derived values in parenthesis, my estimates in italics and parenthesis. Source identifications in brackets, see this link for sources):
orbital data, primary (osculating elements) [JPL]:
|
semimajor axis a: |
1.98530923 AU
| |
orbital period P: |
2.7973 y (=1,021.74064 d)
| |
eccentricity e: |
0.47767361
| |
perihelion distance q: |
1.03697940 AU
| |
aphelion distance Q: |
2.933639 AU
| |
inclination i: |
6.686945°
| |
argument of perihelion omega: |
172.44317°
| |
ascending node OMEGA: |
325.92982°
| |
mean anomaly M: |
322.278008°
| |
perihelion passage TP: |
2008-02-11.06137
| |
Epoch: |
27 OCT 2007
| |
data arc: |
1990-2008 (353 obs.)
|
orbital data, second component:
|
semimajor axis a: |
?
| |
semimajor axis/primary radius a/Rp: |
?
| |
orbital period P: |
?
| |
eccentricity e: |
?
|
orbital data, third component:
|
semimajor axis a: |
?
| |
semimajor axis/primary radius a/Rp: |
?
| |
orbital period P: |
?
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
2 km [C1254]
| |
absolute magnitude H: |
16.861 ± 0.805 [JPL]
| |
rotation period: |
0.115 ± 0.004 d? [B08a]
| |
amplitude delta M: |
0.081 ± 0.005 [B08a]
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) [a]
| |
geometric albedo: |
(0.06)
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, second component:
|
diameter: |
1 km [C1254]
| |
diameter ratio Ds/Dp: |
(0.5)
| |
component magnitude difference: |
(1.5)
| |
rotation period: |
?
|
other data, third component:
|
diameter: |
400 m [C1254]
| |
diameter ratio Ds/Dp: |
(0.2)
| |
component magnitude difference: |
(3.5)
| |
rotation period: |
?
|
|
--(153591) 2001 SN263--discovery and notes:
Primary discovered 20 September 2001 by the LINEAR program at Socorro. Subsequently linked to observations from 1990. (153591) 2001 SN263 is an Amor type asteroid and is the first identified triple system among the near-Earth population.
Second and third components identified from radar observations at Arecibo on 12 February 2008 by M. C. Nolan, E. S. Howell, L. A. M. Benner, S. J. Ostro, J. D. Giorgini, M. W. Busch, L. M. Carter, R. F. Anderson, C. Magri, D. B. Campbell, J. L. Margot, and R. Vervack. (153591) 2001 SN263 was suggested to be a binary system on 15 January 2008 based on light curve observations from 10-11 January 2008 from the Haute-Provence Observatory, France, by Jean Strajnik, Aline Lebras, Ame'lie Malpot, Marion Melani, Arthur Thenon, Philippe Soudrain, and Raoul Behrend.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Stoss, R. & Spahr, T. B. 2002, Minor Planet Electronic Circulars 2001 SN263
- Ticha, J., Tichy, M., Moravec, Z., Balam, D. D., Blythe, M., Shelly, F., Bezpalko, M., Huber, R., Manguso, L., Adams, S., Stuart, J., Sayer, R., Evans, J. B., Viggh, H., Ries, J. G., & Spahr, T. B. 2001, Minor Planet Electronic Circulars 2001 SN263
© 2008 by Wm. Robert Johnston.
Last modified 14 February 2008.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.