303712 (2005 PR21)

System parameters

Heliocentric orbit	Photometry	Position 2025/08/22 21:44 UTC
DES class = CLASSICAL	H_V = 6.6±0.5	+00:13:36.30 +02:04:49.7
<a> = 44.22 (AU)	V = 22.9 (V₂ = 24.4)	Uncertainty = 0.1 (arcsec)
<e> = 0.098	Δ_mag = 1.10	Rates: -2.197, -0.916 ("/hr)
<i> = 2.69 (degrees)	B-V = NULL
Perihelion = 1976	V-R = NULL	Opposition: September
Aphelion = 2123

Astrometric observations

Observation time (UTC)	Observatory/Instrument	RA	DEC	Δ (AU)	Δx (arcsec)	Δx error	Δy (arcsec)	Δy error
2007/05/10 12.65722	HST/WFPC2-PC	+22:43:42.93	-08:05:26.2	41.19128	-0.12063	0.00579	-0.00398	0.00741
plus proprietary data

Orbital knowledge

Comments: Orbit known, pending publication. Mirror ambiguity remains.

Last updated: 2025/08/22 21:44 UTC