2005 AB
compiled by Wm. Robert Johnston
last updated 28 August 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: |
3.21624848634739 AU
| |
orbital period P: |
5.7681 y (=2106.8 d)
| |
eccentricity e: |
0.65589433933271
| |
perihelion distance q: |
1.10672931026474 AU
| |
aphelion distance Q: |
5.32576766 AU
| |
inclination i: |
8.16179894856986°
| |
argument of perihelion omega: |
63.7350463853884°
| |
ascending node OMEGA: |
126.297882603159°
| |
mean anomaly M: |
23.6468321253837°
| |
perihelion passage TP: |
2005-04-01.6136399
| |
Epoch: |
18 AUG 2005
| |
data arc: |
192 days (1713 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(2.5 km?)
| |
semimajor axis/primary radius a/Rp: |
(4?)
| |
orbital period P: |
17.9 h [I8483]
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(1.2 km?)
| |
absolute magnitude H: |
17.27 [JPL]
| |
rotation period: |
3.337 h [I8483]
| |
amplitude delta M: |
0.04 [I8483]
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) [a]
| |
geometric albedo: |
?
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(0.3 km?)
| |
diameter ratio Ds/Dp: |
0.24 [I8483]
| |
component magnitude difference: |
(3)
| |
rotation period: |
?
|
|
--2005 AB--discovery and notes:
Primary discovered 1 January 2005 by the Catalina Sky Survey.
Companion discovered based on lightcurve observations by V. Reddy, R. Dyvig, S. D. Quinn, P. Pravec, and P. Kusnirak, announced 11 February 2005.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Reddy, V., Dyvig, R., Pravec, P., & Kusnirak, P. 2005, International
Astronomical Union Circular 2005 AB
- Lopez, A., Pacheco, R., Forteza, J., Christensen, E. J., Beshore, E. C.,
Casey, C. M., Garradd, G. J., Hill, R. E., Larson, S. M., McNaught, R. H.,
Gomez, J. J., Sue, J., Lacruz, J., Birtwhistle, P., & Smalley, K. E. 2005,
Minor Planet Electronic Circulars 2005 AB
© 2005 by Wm. Robert Johnston.
Last modified 28 August 2005.
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