1982 UM2

1982UM2, 09538, 1986 VH, 1986VH, J82U02M, J86V00H

All data for this body: [vot]

MPC data
Name (number) 1982 UM2 (9538)
a 2.52262
e 0.13947
i / sin(i) 2.2716 / 0.03964
q 2.17080
Q 2.87443
ω 250.2037
Node 158.8018
m 214.6807
n 0.2460
Epoch 2460800.5
nobs 3775
nopp 26
Years observed 1954-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.521
ep 0.114
sin(ip) 0.036
G 0.150
H 13.840
Mass
D 4.58 0.071
pV 0.297 0.0372
Value
Rotational Period 21.990
Period quality 1
Spectral Class S
Spectral Class Score 13.207
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5205 0.1139 0.0362 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.47 0.090 0.090 Masiero 2012ApJ...759L...8M NEATM
4.77 0.116 0.116 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.258 0.0607 0.0607 Masiero 2011ApJ...741...68M NEATM
0.320 0.0470 0.0470 Masiero 2012ApJ...759L...8M 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
13.84 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
21.995 1 Synodic Waszczak 2015AJ....150...75W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
LS 0.45 Bus VIS Carvano 2010A&A...510A..43C PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.999 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.8689 0.8689 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT