Huya (38628 2000 EB173)

System parameters

Heliocentric orbitPhotometry Position 2025/03/30 15:01 UTC
DES class = 3:2E+6:4II HV = 5.2±0.2 +17:44:20.75 -07:49:21.3
<a> = 39.45 (AU) V = 19.9 (V2 = 21.7) Uncertainty = 0.0 (arcsec)
<e> = 0.261 Δmag = 1.56 Rates: -0.056, +1.307 ("/hr)
<i> = 15.46 (degrees) B-V = 0.96±0.03  
Perihelion = 2014 V-R = 0.54±0.04 Opposition: June
Aphelion = 2137    

Astrometric observations

Observation time (UTC)Observatory/InstrumentRADEC Δ (AU)Δx (arcsec) Δx errorΔy (arcsec) Δy error
2002/06/30  19.88030 HST/STIS +13:32:09.58 -00:05:44.7 29.32055 -0.08072 0.00256 -0.01525 0.00213
2002/07/01  15.15042 HST/STIS +13:32:09.27 -00:05:53.5 29.33324 -0.03174 0.00338 +0.06966 0.00245
2012/05/06  01.01431 HST/WFC3 +15:21:20.95 -04:03:49.4 27.60141 -0.08701 0.00174 +0.02700 0.00136
2021/03/28  01.41600 OCCULTATION/OCCULTATION +17:02:24.10 -07:06:07.6 28.40616 -0.04146 0.00814 +0.08291 0.00521
2021/06/28  10.87098 KECK2/NIRC2 +16:54:36.29 -06:34:07.1 27.90373 -0.05270 0.00300 -0.03062 0.00300
2021/06/29  10.95836 KECK2/NIRC2 +16:54:30.30 -06:34:10.0 27.91056 -0.04217 0.00300 +0.07594 0.00300
2023/02/17  11.71200 OCCULTATION/OCCULTATION +17:22:02.20 -07:49:54.5 29.29606 -0.05503 0.00713 -0.00518 0.00930
2023/06/24  00.96000 OCCULTATION/OCCULTATION +17:16:43.66 -07:00:20.1 28.03557 +0.06546 0.00300 -0.04440 0.00500

Orbital knowledge

Comments: Orbit published here.
Parameter Value Units
P period3.461884±0.000009days
a semimajor axis1900±7kilometers
e eccentricity0.03±0.01dimensionless
i inclination55.1±0.7degrees
ε mean longitude at epoch21±1degrees
Ω longitude of ascending node111±1degrees
ϖ longitude of periapsis240±20degrees

Angles are referenced to J2000 equatorial coordinates.

Epoch = Julian date 2452400.0

2025/03/30 15:01


Last updated: 2025/03/30 15:01 UTC