1989 US4

1989US4, 12698, 1998 SB141, 1998SB141, 1998 VY7, 1998VY7, J89U04S, J98SE1B, J98V07Y

All data for this body: [vot]

MPC data
Name (number) 1989 US4 (12698)
a 2.73692
e 0.09838
i / sin(i) 1.2388 / 0.02162
q 2.46766
Q 3.00619
ω 186.7664
Node 222.7572
m 291.1548
n 0.2177
Epoch 2460800.5
nobs 3335
nopp 23
Years observed 1989-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.737
ep 0.078
sin(ip) 0.040
G 0.150
H 13.670
Mass
D 5.58 0.064
pV 0.215 0.0152
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7370 0.0783 0.0398 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.56 0.065 0.065 Masiero 2011ApJ...741...68M NEATM
6.11 0.400 0.400 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.206 0.0170 0.0170 Masiero 2011ApJ...741...68M NEATM
0.249 0.0336 0.0336 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
13.67 MPC-2023-12-04 MPC-2023-12-04 Phot