(88710) 2001 SL9
compiled by Wm. Robert Johnston
last updated 1 September 2005
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: |
1.0613064820094 AU
| |
orbital period P: |
1.0934 y (=399.4 d)
| |
eccentricity e: |
0.270023160524823
| |
perihelion distance q: |
0.774729151451741 AU
| |
aphelion distance Q: |
1.34788381 AU
| |
inclination i: |
21.898289533398°
| |
argument of perihelion omega: |
329.255393913696°
| |
ascending node OMEGA: |
202.906047989506°
| |
mean anomaly M: |
233.204897769253°
| |
perihelion passage TP: |
2005-06-19.6564426
| |
Epoch: |
30 JAN 2005
| |
data arc: |
1954-2004 (489 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(1.8 km)
| |
semimajor axis/primary radius a/Rp: |
3.6 [A3a]
| |
orbital period P: |
16.40 ± 0.02 h [I7742]
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
1.0 km [A3a]
| |
absolute magnitude H: |
17.43 [JPL]
| |
rotation period: |
2.4003 ± 0.0003 h [I7742]
| |
amplitude delta M: |
0.08 [H03a]
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) [a]
| |
geometric albedo: |
(0.16) [a]
| |
mass: |
(1x1012 kg?)
| |
density: |
(1.8 g/cm3?)
| |
type: |
?
|
other data, secondary:
|
diameter: |
(0.31 km)
| |
diameter ratio Ds/Dp: |
0.31 ± 0.02 [I7742]
| |
component magnitude difference: |
?
| |
rotation period: |
?
|
|
--(88710) 2001 SL9--discovery and notes:
Primary discovered 18 September 2001 by the JPL/NEAT program from Palomar Mountain Observatory, California, USA, but linked to prediscovery observations from 1954.
Companion discovered from observations made 2-22 October 2001 by P. Pravec, P. Kusnirak, and B. Warner; announced 3 November 2001.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Haver, R., Pelloni, A., Forti, G., Boattini, A., Gnadig, A., Stoss, R., & Spahr, T. B. 2001, Minor Planet Electronic Circ., 2001-S21 (2001). 2001 SL9
- Tichy, M., Kocer, M., Moravec, Z., Knoefel, A., Griesser, M., Kusnirak, P., Helin, E. F., Pravdo, S., Lawrence, K., Hicks, M., Hovland, E., Bickler, T., Schroeder, J., Scherr, L., Thicksten, R., Deetz, A., Blythe, M., Shelly, F., Bezpalko, M., Huber, R., Manguso, L., Adams, S., Stuart, J., Sayer, R., Evans, J. B., Viggh, H., Klinglesmith, D. A., III, McGaha, J. E., Dyvig, R., & Spahr, T. B. 2001, Minor Planet Electronic Circ., 2001-S16 (2001). 2001 SL9
© 2001-2004, 2005 by Wm. Robert Johnston.
Last modified 1 September 2005.
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