Heliocentric orbit | Photometry | Position 2022/03/21 22:18 UTC |
DES class = CLASSICAL | HV = 5.91±0.07 | +22:27:38.09 -10:48:33.7 |
<a> = 43.90 (AU) | V = 22.4 (V2 = 23.2) | Uncertainty = 0.1 (arcsec) |
<e> = 0.074 | Δmag = 0.20 | Rates: +3.360, +1.236 ("/hr) |
<i> = 0.95 (degrees) | B-V = 1.0±0.2 | |
Perihelion = 1953 | V-R = 0.51±0.04 | Opposition: August |
Aphelion = 2100 |
Observation time (UTC) | Observatory/Instrument | RA | DEC | Δ (AU) | Δx (arcsec) | Δx error | Δy (arcsec) | Δy error |
2006/04/18 17.25408 | HST/ACS-HRC | +21:12:06.38 | -16:51:29.8 | 43.14809 | +0.06581 | 0.00050 | -0.05436 | 0.00050 |
2007/08/17 13.84333 | HST/WFPC2-PC | +21:13:05.49 | -16:51:02.5 | 41.98704 | -0.43140 | 0.00119 | -0.00818 | 0.00100 |
2007/08/19 09.63917 | HST/WFPC2-PC | +21:12:57.10 | -16:51:40.2 | 41.99289 | -0.44073 | 0.00176 | -0.01431 | 0.00107 |
2008/04/11 01.85611 | HST/WFPC2-PC | +21:21:58.19 | -16:10:20.9 | 43.47624 | -0.05513 | 0.00134 | +0.07862 | 0.00108 |
2008/04/30 21.21703 | HST/WFPC2-PC | +21:22:47.44 | -16:06:58.0 | 43.16039 | -0.30222 | 0.00100 | +0.03979 | 0.00100 |
2008/08/01 09.44361 | HST/WFPC2-PC | +21:19:34.02 | -16:23:36.4 | 42.05930 | +0.16786 | 0.00168 | -0.00815 | 0.00124 |
plus proprietary data |
Comments: Orbit published here.
Parameter | Value | Units |
P period | 138.118±0.006 | days |
a semimajor axis | 9960±30 | kilometers |
e eccentricity | 0.418±0.002 | dimensionless |
i inclination | 172.9±0.2 | degrees |
ε mean longitude at epoch | 34±2 | degrees |
Ω longitude of ascending node | 135±1 | degrees |
ϖ longitude of periapsis | 213±2 | degrees |
Angles are referenced to J2000 equatorial coordinates.
Epoch = Julian date 2454200.0
Last updated: 2022/03/21 22:18 UTC