1991 UC

1991UC, 10788, 1990 RL18, 1990RL18, J90R18L, J91U00C

All data for this body: [vot]

MPC data
Name (number) 1991 UC (10788)
a 2.87021
e 0.03246
i / sin(i) 1.0627 / 0.01855
q 2.77703
Q 2.96339
ω 55.8454
Node 312.1604
m 340.3147
n 0.2027
Epoch 2460800.5
nobs 2858
nopp 27
Years observed 1990-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.871
ep 0.002
sin(ip) 0.037
G 0.150
H 13.710
Mass
D 5.67 0.142
pV 0.240 0.0532
Value
Rotational Period 9.401
Period quality 2
Spectral Class S
Spectral Class Score 8.485
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8709 0.0024 0.0367 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.67 0.142 0.142 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.240 0.0532 0.0532 Masiero 2011ApJ...741...68M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2023-12-94 MPC-2023-12-94 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.71 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
9.4015 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
K S 0.2968 0.5970 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.63 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.8709 0.5970 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT