(208996) 2003 AZ84

compiled by Wm. Robert Johnston
last updated 9 April 2009

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: 39.413 AU
orbital period P: 247.44 y (=90,378.6 d)
eccentricity e: 0.1810
perihelion distance q: 32.280 AU
aphelion distance Q: 46.547 AU
inclination i: 13.596°
argument of perihelion omega: 15.04°
ascending node OMEGA: 252.143°
mean anomaly M: 215.21°
perihelion passage TP: 2106-10-18.9
Epoch: 10 APR 2007
data arc: 2001-2006 (35 obs.)

orbital data, secondary:
semimajor axis a: (7,200 km separation) [I8812]
semimajor axis/primary radius a/Rp: (21?)
orbital period P: (~13 d?)
eccentricity e: ?

other data, primary:
diameter: 686 +99/-96 km [S07a]
absolute magnitude H: 4.0 [JPL]
rotation period: 13.44 h [JPL]
amplitude delta M: ?
color index B-V: 0.65±0.03 [F04a]
color index V-R: 0.39±0.03 [F04a]
color index B-R: (1.04±0.03)
color index V-I: 0.75±0.03 [F04a]
slope parameter G: (0.15) assumed
geometric albedo: 0.123 +0.043/-0.029 [S07a]
mass: ?
density: ?
type: ?

other data, secondary:
diameter: (68 ± 20 km)
diameter ratio Ds/Dp: (0.10 ± 0.02)
component magnitude difference: 5.0 ± 0.3 [I8812]
rotation period: ?

--(208996) 2003 AZ84--discovery and notes:

Primary discovered 13 January 2003 by C. A. Trujillo and M. E. Brown from NEAT at Palomar Mountain. Linked to prediscovery observations from 16 December 2001. Permanent number assigned April 2009.

Companion discovered by M. E. Brown and T.-A. Suer using Hubble Space Telescope observations from 2 December 2005; reported 22 February 2007.

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

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2007, 2009 by Wm. Robert Johnston.
Last modified 9 April 2009.
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