2006 SF369

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: 62.4343769 AU
orbital period P: 493.34 y (=180,191.0 d)
eccentricity e: 0.3756677
perihelion distance q: 38.9797981 AU
aphelion distance Q: 85.8889557 AU
inclination i: 27.69075°
argument of perihelion omega: 288.84499°
ascending node OMEGA: 95.17852°
mean anomaly M: 12.23784°
perihelion passage TP: 1991-01-18.6
Epoch: 27 OCT 2007
data arc: 2005-2006 (26 obs.)

orbital data, secondary:
semimajor axis a: (3,000 km separation) [I8922]
semimajor axis/primary radius a/Rp: (40?)
orbital period P: (~30 d?)
eccentricity e: ?

other data, primary:
diameter: (142 km?)
absolute magnitude H: 6.7 [JPL]
rotation period: ?
amplitude delta M: ?
color index B-V: ?
color index V-R: ?
color index B-R: ?
color index R-I: ?
slope parameter G: (0.15) assumed
geometric albedo: (0.09) assumed
mass: ?
density: ?
type: ?

other data, secondary:
diameter: (142 km?)
diameter ratio Ds/Dp: (1.0)
component magnitude difference: <0.01 [I8922]
rotation period: ?

--2006 SF369--discovery and notes:

Primary discovered 30 September 2006 by A. C. Becker, A. W. Puckett, and J. Kubica from observations at Apache Point, linked to prediscovery observations from 2005.

Companion discovered by K. S. Noll, S. D. Kern, W. M. Grundy, H. F. Levison, and E. A. Barket from Hubble Space Telescope observations made 13 November 2007, announced 19 February 2008.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2008 by Wm. Robert Johnston.
Last modified 26 November 2008.
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