2001 QY297
compiled by Wm. Robert Johnston
last updated 26 November 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: |
43.9849 AU
| |
orbital period P: |
291.72 y (=106,550.1 d)
| |
eccentricity e: |
0.086645
| |
perihelion distance q: |
40.1738 AU
| |
aphelion distance Q: |
47.7960 AU
| |
inclination i: |
1.54671°
| |
argument of perihelion omega: |
127.308°
| |
ascending node OMEGA: |
108.7388°
| |
mean anomaly M: |
69.667°
| |
perihelion passage TP: |
1950-10-26
| |
Epoch: |
10 APR 2007
| |
data arc: |
2001-2004 (37 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(2,800 km separation?) [N07a]
| |
semimajor axis/primary radius a/Rp: |
(20?)
| |
orbital period P: |
(~10 d?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(282 km?)
| |
absolute magnitude H: |
5.32 ± 1.05 [JPL]
| |
rotation period: |
?
| |
amplitude delta M: |
?
| |
color index B-V: |
0.70 ± 0.12 [D05a]
| |
color index V-R: |
0.43 ± 0.09 [D05a]
| |
color index B-R: |
(1.13)
| |
color index V-I: |
1.10 ± 0.19 [D05a]
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
(0.09) assumed
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(233 km?)
| |
diameter ratio Ds/Dp: |
(0.83)
| |
component magnitude difference: |
0.42 ± 0.07 [N07a]
| |
rotation period: |
?
|
|
--2001 QY297--discovery and notes:
Primary discovered 21 August 2001 by M. W. Buie from Cerro Tololo Observatory, La Serena, Chile.
Companion reported March 2007.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Noll, Keith S., Grundy, William M., Chiang, Eugene I., Margot, Jean-Luc, & Kern, Susan D. 2007, ArXiv Astrophysics e-prints Binaries in the Kuiper Belt
© 2007, 2008 by Wm. Robert Johnston.
Last modified 26 November 2008.
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