524531 (2002 XH91)

System parameters

Heliocentric orbitPhotometry Position 2025/08/22 20:59 UTC
DES class = CLASSICAL HV = 5.9±0.5 +08:32:33.04 +22:20:12.3
<a> = 43.97 (AU) V = 22.6 (V2 = 24.0) Uncertainty = 0.1 (arcsec)
<e> = 0.079 Δmag = 1.04 Rates: +3.655, -0.686 ("/hr)
<i> = 3.04 (degrees) B-V = NULL  
Perihelion = 2135 V-R = NULL Opposition: February
Aphelion = 1988    

Astrometric observations

Observation time (UTC)Observatory/InstrumentRADEC Δ (AU)Δx (arcsec) Δx errorΔy (arcsec) Δy error
2008/11/08  23.03417 HST/WFPC2-PC +07:17:27.40 +24:29:08.9 47.06077 +0.54048 0.00305 +0.21496 0.00231
2012/04/12  06.45708 Gemini/NIRI +07:23:37.02 +24:32:47.5 47.50413 -0.20554 0.01025 +0.21393 0.01467
2012/11/06  14.37823 Gemini/NIRI +07:36:19.33 +24:10:13.8 47.04377 +0.73134 0.01126 +0.12065 0.01142
2015/04/05  07.93032 Keck/NIRC2 +07:37:30.48 +24:18:15.3 47.21099 -0.02954 0.00384 +0.33680 0.00148
2017/12/09  13.57786 Keck/NIRC2 +07:58:25.97 +23:40:32.1 46.47696 +0.78493 0.00300 +0.09090 0.00381

Orbital knowledge

Comments: Orbit published here.
Parameter Value Units
P period371.1±0.2days
a semimajor axis22400±400kilometers
e eccentricity0.71±0.02dimensionless
i inclination29±2degrees
ε mean longitude at epoch274±3degrees
Ω longitude of ascending node278±2degrees
ϖ longitude of periapsis70±1degrees

Angles are referenced to J2000 equatorial coordinates.

Epoch = Julian date 2457000.0

2025/08/22 20:59


Last updated: 2025/08/22 20:59 UTC