2005 GD187
compiled by Wm. Robert Johnston
last updated 20 September 2011
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: |
42.94524 AU
| |
orbital period P: |
281.44 y (=102,794.9 d)
| |
eccentricity e: |
0.021944
| |
perihelion distance q: |
42.00283 AU
| |
aphelion distance Q: |
43.88764 AU
| |
inclination i: |
0.7016°
| |
argument of perihelion omega: |
345.2037°
| |
ascending node OMEGA: |
354.4593°
| |
mean anomaly M: |
178.1143°
| |
perihelion passage TP: |
1872-05-28.0
| |
Epoch: |
27 AUG 2011
| |
data arc: |
2005-2009 (14 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(7,600 km separation) [G11a]
| |
semimajor axis/primary radius a/Rp: |
(140?)
| |
orbital period P: |
(190 d?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(107 km?)
| |
absolute magnitude H: |
7.5 ± 0.5 [G11a]
| |
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: |
(0.09) assumed
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(89 km?)
| |
diameter ratio Ds/Dp: |
(0.83)
| |
component magnitude difference: |
0.40 [G11a]
| |
rotation period: |
?
|
|
--2005 GD187--discovery and notes:
Primary discovered 2005 from .
Secondary discovered in image obtained 21 January 2009 by the Hubble Space Telescope; reported 2011.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
© 2011 by Wm. Robert Johnston.
Last modified 20 September 2011.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.