1994 XD
compiled by Wm. Robert Johnston
last updated 4 March 2007
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: |
2.34976644663958 AU
| |
orbital period P: |
3.602 y (=1315.7 d)
| |
eccentricity e: |
0.732910250765737
| |
perihelion distance q: |
0.62759853099205 AU
| |
aphelion distance Q: |
4.07193436 AU
| |
inclination i: |
4.30789976693224°
| |
argument of perihelion omega: |
249.226724655459°
| |
ascending node OMEGA: |
96.3793134517822°
| |
mean anomaly M: |
4.47838960451404°
| |
perihelion passage TP: |
2005-08-01.6335365
| |
Epoch: |
18 AUG 2005
| |
data arc: |
1994-2005 (145 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(~1 ± 0.3 km) [I8563]
| |
semimajor axis/primary radius a/Rp: |
(3?)
| |
orbital period P: |
(16 h?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
600 m [I8563]
| |
absolute magnitude H: |
19.11 [JPL]
| |
rotation period: |
?
| |
amplitude delta M: |
?
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
(0.11)
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
>150 m [I8563]
| |
diameter ratio Ds/Dp: |
(0.25)
| |
component magnitude difference: |
(3.0)
| |
rotation period: |
?
|
|
--1994 AW1--discovery and notes:
Primary discovered 1 December 1994 by the Kitt Peak-Spacewatch program at Steward Observatory, Arizona, USA.
Companion discovered 24 June 2005 by L. A. M. Benner, M. C. Nolan, S. J. Ostro, J. D. Giorgini, J. L. Margot, and C. Magri from radar observations at Arecibo Observatory, Puerto Rico, announced 11 July 2005.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Benner, L. A. M., Nolan, M. C., Ostro, S. J., Giorgini, J. D., Margot, J.
L., & Magri, C. 2005, International Astronomical Union Circular 1994 XD
- Trentman, R., Blythe, M., Shelly, F., Bezpalko, M., Huber, R., Manguso, L.,
Torres, D., Kracke, R., McCleary, M., Stange, H., Milner, A., Stuart, J.,
Sayer, R., Evans, J., Kommers, J., Larson, S. M., Beshore, E. C., Casey, C.
M., Christensen, E. J., Garradd, G. J., Grauer, A., Hill, R. E., McNaught,
R. H., Jacques, C., Pimentel, E., & Spahr, T. B. 2005, Minor Planet
Electronic Circulars 1994 XD
- Nakamura, A., Gehrels, T., Scotti, J. V., & Marsden, B. G. 1994, Minor
Planet Electronic Circulars 1994 XD
- Gehrels, T. & Marsden, B. G. 1994, Minor Planet Electronic Circulars 1994
XD
© 2005-2006, 2007 by Wm. Robert Johnston.
Last modified 4 March 2007.
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