Ceto (65489 2003 FX128)

System parameters

Heliocentric orbitPhotometry Position 2015/05/10 04:30 UT
DES class = CENTAURR HV = 6.59±0.07 +15:16:37.28 +01:30:01.4
<a> = 100.15 (AU) V = 22.1 (V2 = 23.2) Uncertainty = 0.2 (arcsec)
<e> = 0.823 Δmag = 0.58 Rates: -3.366, +1.063 ("/hr)
<i> = 21.40 (degrees) B-V = 0.87±0.02  
Perihelion = 1989 V-R = 0.55±0.02 Opposition: May
Aphelion = 2509    

Astrometric observations

Observation time (UT)Observatory/InstrumentRADEC Δ (AU)Δx (arcsec) Δx errorΔy (arcsec) Δy error
2006/04/11  21.69100 HST/ACS-HRC +14:03:13.20 +02:19:31.9 26.78465 +0.01724 0.00190 +0.08325 0.00330
2006/05/06  07.44700 HST/ACS-HRC +14:00:37.70 +02:36:30.2 26.88112 -0.04752 0.00240 -0.06871 0.00140
2006/05/10  04.51000 HST/ACS-HRC +14:00:14.00 +02:38:35.3 26.91192 -0.00321 0.00130 +0.08600 0.00170
2006/05/30  00.21700 HST/ACS-HRC +13:58:26.00 +02:46:01.6 27.12867 +0.03622 0.00100 +0.07467 0.00110
2006/05/31  01.69200 HST/ACS-HRC +13:58:21.10 +02:46:15.8 27.14284 +0.08288 0.00170 +0.02949 0.00220
2010/07/03  19.44056 HST/WFC3-UVIS +14:35:14.20 +02:11:46.2 31.14259 -0.01605 0.00162 -0.06501 0.00361
plus proprietary data                

Orbital knowledge

Comments: Orbit published here. Mirror ambiguity remains.
Parameter Value Units
P period9.560±0.001days
a semimajor axis1850±40kilometers
e eccentricity0.008±0.008dimensionless

Breaking the mirror ambiguity...

2015/05/10 04:30

Last updated: 2015/05/10 04:30 UT