(1862) Apollo

compiled by Wm. Robert Johnston
last updated 19 May 2007

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: 1.47134283518253 AU
orbital period P: 1.7848 y (=651.9 d)
eccentricity e: 0.559898424549581
perihelion distance q: 0.647540299791517 AU
aphelion distance Q: 2.29514537 AU
inclination i: 6.35723093103216°
argument of perihelion omega: 285.803940188833°
ascending node OMEGA: 35.782857928829°
mean anomaly M: 343.087200690567°
perihelion passage TP: 2005-09-17.6254331
Epoch: 18 AUG 2005
data arc: 1996-2005 (352 obs.)

orbital data, secondary:
semimajor axis a: 3 km [I8627]
semimajor axis/primary radius a/Rp: (4)
orbital period P: (17 h?)
eccentricity e: ?

other data, primary:
diameter: 1.6 km [I8627]
a/b: 1.27 [O02a]
absolute magnitude H: 16.25 [JPL]
rotation period: 3.0655 ± 0.0008 h [H87a]
amplitude delta M: ?
color index B-V: 0.82 [JPL]
color index V-R: ?
color index R-I: ?
slope parameter G: 0.09 [JPL]
geometric albedo: 0.25 [JPL]
mass: ?
density: ?
type: Q [O02a]

other data, secondary:
diameter: 0.08 km [I8627]
diameter ratio Ds/Dp: (0.05)
component magnitude difference: (6.5)
rotation period: ?

--(1862) Apollo--discovery and notes:

Primary discovered on 24 April 1932 by K. Reinmuth at Heidelberg, Germany. Alternative designation 1932 HA.

Secondary identified based on radar observations on 29 October-2 November 2005 from Arecibo Observatory, Puerto Rico.

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

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2005, 2007 by Wm. Robert Johnston.
Last modified 19 May 2007.
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