2003 QY90
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: |
42.641490094358 AU
| |
orbital period P: |
278.4561 y (=101708 d)
| |
eccentricity e: |
0.05465564061276
| |
perihelion distance q: |
40.3108921365682 AU
| |
aphelion distance Q: |
44.97208805 AU
| |
inclination i: |
3.76736387929301°
| |
argument of perihelion omega: |
42.3011388504203°
| |
ascending node OMEGA: |
104.158505716021°
| |
mean anomaly M: |
180.204226470374°
| |
perihelion passage TP: |
2144-09-13.3507447
| |
Epoch: |
18 AUG 2005
| |
data arc: |
2000-2005 (33 obs.)
| orbital data, secondary:
|
semimajor axis a: |
13,773 ± 254 km;
14,212 ± 343 km [K06a]
| |
semimajor axis/primary radius a/Rp: |
(190?)
| |
orbital period P: |
460 ± 8 d;
444 ± 9 d [K06a]
| |
eccentricity e: |
0.21 ± 0.02;
0.30 ± 0.03 [K06a]
| |
inclination i: |
33.8° ± 0.3°;
154.0° ± 0.3° [K06a]
| |
ascending node : |
111.6° ± 0.6°;
315.4° ± 0.9° [K06a]
| |
argument of pericenter : |
2° ± 2°;
314° ± 2° [K06a]
| |
time of pericenter : |
JD 2452707 ± 17;
JD 2452744 ± 15 [K06a]
| |
other data, primary:
|
diameter: |
(137 km?)
| |
absolute magnitude H: |
6.17 [JPL]
| |
rotation period: |
3.4 ± 1.1 h [K06a]
| |
amplitude delta M: |
0.34 ± 0.12 [K06a]
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
(0.13 ± 0.09);
0.175 [K06a]
| |
mass (system): |
(2.3 to 18)x1017 kg [K06a]
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(100 km?)
| |
diameter ratio Ds/Dp: |
(0.80 ± 0.08) [K06a]
| |
component magnitude difference: |
(0.61) [K06a]
| |
rotation period: |
7.1 ± 2.9 h [K06a]
| |
amplitude delta M: |
0.90 ± 0.36 [K06a]
|
|
--2003 QY90--discovery and notes:
Primary discovered 24 August 2003 from Cerro Tololo Observatory.
Companion discovered 23 October 2003 by S. D. Kern, J. L. Elliot, and K. B. Clancy from the Clay telescope; announced 29 October 2003.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Kern, S. D., Elliot, J. L., Clancy, K. B., Meech, K. J., Pittichova, J.,
Buie, M. W., Wasserman, L. H., Millis, R. L., & Marsden, B. G. 2004, Minor
Planet Electronic Circulars 2003 FJ127, 2003 QY90
- Marsden, B. G. 2003, Minor Planet Circulars TEN TNOs
© 2003-2006, 2008 by Wm. Robert Johnston.
Last modified 26 November 2008.
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