2001 QC298

System parameters

Heliocentric orbitPhotometry Position 2022/03/21 22:19 UTC
DES class = SCATEXTD HV = 6.9±0.5 +23:48:14.20 +15:48:47.8
<a> = 46.33 (AU) V = 23.1 (V2 = 24.0) Uncertainty = 0.2 (arcsec)
<e> = 0.129 Δmag = 0.44 Rates: +3.883, +1.841 ("/hr)
<i> = 31.54 (degrees) B-V = 0.68±0.04  
Perihelion = 2002 V-R = 0.46±0.04 Opposition: September
Aphelion = 2162    

Astrometric observations

Observation time (UTC)Observatory/InstrumentRADEC Δ (AU)Δx (arcsec) Δx errorΔy (arcsec) Δy error
2002/10/04  15.87757 HST/NICMOS-NIC2 +22:34:18.24 -06:33:05.0 39.71831 -0.03353 0.00215 +0.12321 0.00303
2003/04/22  23.24905 HST/NICMOS-NIC2 +22:43:30.51 -05:16:45.6 41.16560 +0.06479 0.00253 -0.06930 0.00535
2003/06/30  14.36766 HST/ACS-HRC +22:44:38.92 -04:56:00.9 40.07471 -0.01892 0.00030 +0.12577 0.00060
2003/07/09  17.69178 HST/ACS-HRC +22:44:17.41 -04:56:22.0 39.94442 +0.10265 0.00144 -0.04927 0.00090
2003/07/25  21.00042 HST/ACS-HRC +22:43:24.78 -04:58:36.6 39.75092 -0.05483 0.00048 -0.04894 0.00113
2003/08/23  14.84184 HST/ACS-HRC +22:41:18.02 -05:06:35.3 39.56012 +0.09058 0.00030 +0.11045 0.00030
2004/05/07  00.69828 HST/ACS-HRC +22:47:53.73 -03:59:13.9 40.97393 -0.10199 0.00211 +0.04131 0.00129
2004/06/19  16.47132 HST/ACS-HRC +22:48:32.97 -03:45:27.9 40.25641 +0.09395 0.00119 -0.05315 0.00069
2010/10/03  13.64028 HST/WFC3 +23:03:44.76 +03:01:38.6 39.75013 +0.03971 0.00051 +0.14506 0.00294

Orbital knowledge

Comments: Orbit published here, and updated here.
Parameter Value Units
P period19.2287±0.0001days
a semimajor axis3810±10kilometers
e eccentricity0.334±0.002dimensionless
i inclination56.3±0.3degrees
ε mean longitude at epoch310.1±0.3degrees
Ω longitude of ascending node79.1±0.5degrees
ϖ longitude of periapsis317.1±0.3degrees

Angles are referenced to J2000 equatorial coordinates.

Epoch = Julian date 2452000.0

2022/03/21 22:19


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