1990 UJ2

1990UJ2, 09037, 1981 QB2, 1981QB2, J81Q02B, J90U02J

All data for this body: [vot]

MPC data
Name (number) 1990 UJ2 (9037)
a 2.65185
e 0.21587
i / sin(i) 4.7974 / 0.08363
q 2.07939
Q 3.22432
ω 224.5380
Node 132.9529
m 31.1463
n 0.2282
Epoch 2460800.5
nobs 6104
nopp 27
Years observed 1981-2025
rms 0.54
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.651
ep 0.175
sin(ip) 0.068
G 0.150
H 13.930
Mass
D 9.70 0.148
pV 0.077 0.0065
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 5.118
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6513 0.1746 0.0679 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.24 0.210 0.210 Masiero 2011ApJ...741...68M NEATM
6.70 1.800 1.800 Masiero 2021PSJ.....2..162M NEATM
7.06 1.940 1.940 Nugent 2016AJ....152...63N NEATM
8.29 1.520 1.520 Masiero 2021PSJ.....2..162M NEATM
9.11 2.626 2.626 Masiero 2017AJ....154..168M NEATM
9.24 0.215 0.215 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.067 0.0101 0.0101 Masiero 2011ApJ...741...68M NEATM
0.081 0.0468 0.0468 Masiero 2017AJ....154..168M NEATM
0.082 0.0090 0.0090 Masiero 2011ApJ...741...68M NEATM
0.098 0.0280 0.0390 Masiero 2021PSJ.....2..162M NEATM
0.100 0.0700 0.0700 Nugent 2016AJ....152...63N NEATM
0.131 0.0580 0.1050 Masiero 2021PSJ.....2..162M 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
13.93 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C 0.853 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT