469514 (2003 QA91)

System parameters

Heliocentric orbitPhotometry Position 2022/03/21 22:19 UTC
DES class = CLASSICAL HV = 6.2±0.5 +23:20:05.46 -06:35:22.7
<a> = 44.45 (AU) V = 22.6 (V2 = 23.4) Uncertainty = 0.1 (arcsec)
<e> = 0.077 Δmag = 0.10 Rates: +3.485, +1.428 ("/hr)
<i> = 1.03 (degrees) B-V = NULL  
Perihelion = 2082 V-R = NULL Opposition: September
Aphelion = 2232    

Astrometric observations

Observation time (UTC)Observatory/InstrumentRADEC Δ (AU)Δx (arcsec) Δx errorΔy (arcsec) Δy error
2006/06/19  08.85624 HST/ACS-HRC +22:11:11.31 -13:01:58.1 44.57954 -0.01653 0.00159 +0.04690 0.00140
2009/09/15  16.58847 HST/WFC3-UVIS +22:19:59.75 -12:21:08.9 43.92137 +0.04750 0.00173 -0.01279 0.00239
2009/09/16  00.95569 HST/WFC3-UVIS +22:19:58.35 -12:21:16.6 43.92349 +0.04699 0.00299 -0.00462 0.00441
2009/09/17  03.31792 HST/WFC3-UVIS +22:19:53.97 -12:21:40.6 43.93040 -0.03971 0.00169 -0.02924 0.00244
2010/04/15  00.46708 HST/WFC3-UVIS +22:28:01.75 -11:32:15.7 45.46103 +0.03196 0.00343 -0.03595 0.00301
2010/04/19  01.93792 HST/WFC3-UVIS +22:28:17.46 -11:30:54.5 45.40616 +0.01240 0.00307 -0.04722 0.00294
2014/08/19  10.85962 KeckII/NIRC2 +22:45:15.76 -10:03:53.0 43.54349 -0.03934 0.00300 +0.02644 0.00300
2015/09/05  09.82748 KeckII/NIRC2 +22:48:45.59 -09:44:53.3 43.45483 +0.02057 0.00300 +0.04412 0.00300
2016/08/06  11.71549 KeckII/NIRC2 +22:55:34.08 -09:04:51.8 43.51171 -0.03887 0.00300 +0.03028 0.00300
2017/08/25  08.97760 KeckII/NIRC2 +22:59:01.09 -08:45:52.8 43.35326 -0.04327 0.00300 +0.02045 0.00300
2017/08/26  09.81153 KeckII/NIRC2 +22:58:56.75 -08:46:20.5 43.35028 -0.04919 0.00450 -0.00605 0.00300
plus proprietary data                

Orbital knowledge

Comments: Orbit published here.
Parameter Value Units
P period10.1089±0.0003days
a semimajor axis1590±40kilometers
e eccentricity0.02±0.02dimensionless

Breaking the mirror ambiguity...

2022/03/21 22:19

Last updated: 2022/03/21 22:19 UTC