2003 QW111

compiled by Wm. Robert Johnston
last updated 15 August 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: 43.93537 AU
orbital period P: 291.23 y (=106,370.1 d)
eccentricity e: 0.113281
perihelion distance q: 38.95835 AU
aphelion distance Q: 48.91240 AU
inclination i: 2.6658°
argument of perihelion omega: 17.6139°
ascending node OMEGA: 68.5912°
mean anomaly M: 273.1852°
perihelion passage TP: 2081-11-18.4
Epoch: 27 AUG 2011
data arc: 2003-2008 (46 obs.)

orbital data, secondary:
semimajor axis a: (10,360 ± 160 km separation) [I8745]
semimajor axis/primary radius a/Rp: (90?)
orbital period P: (110 d?)
eccentricity e: ?

other data, primary:
diameter: (226 km?)
absolute magnitude H: 6.5 [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: (0.09) assumed
mass: ?
density: ?
type: ?

other data, secondary:
diameter: (113 km?)
diameter ratio Ds/Dp: (0.50)
component magnitude difference: 1.5 [I8745]
rotation period: ?

--2003 QW111--discovery and notes:

Primary discovered 25 August 2003 by M. W. Buie from Cerro Tololo Observatory, La Serena.

Companion discovered by K. S. Noll, W. M. Grundy, D. C. Stephens, and H. F. Levison from Hubble Space Telescope observations on 25 July 2006, reported 7 September 2006.

See more information and links at Asteroid/Comet Connection Catchall Catalog page

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2006-2008, 2011 by Wm. Robert Johnston.
Last modified 15 August 2011.
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