1990UM

1999SM8, 21051, J90U00M, J99S08M

All data for this body: [vot]

MPC data
Name (number) 1990UM (21051)
Packed designation 21051
a 2.75875
e 0.31682
i / sin(i) 10.9326 / 0.18965
q 1.88472
Q 3.63279
ω 305.7925
Node 70.3078
m 296.7469
n 0.2151
Epoch 2459600.5
nobs 1013
nopp 19
Years observed 1990-2021
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.762
ep 0.267
sin(ip) 0.176
Value Standard error
G 0.150
H 14.460
Mass
D 6.93 0.272
pV 0.076 0.0135
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7624 0.2674 0.1762 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.37 1.550 1.550 Masiero 2020PSJ.....1....5M NEATM
6.98 0.276 0.276 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.076 0.0136 0.0136 Masiero 2011ApJ...741...68M NEATM
0.106 0.1070 0.1070 Masiero 2020PSJ.....1....5M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2022-01-18 MPC-2022-01-18 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
14.46 MPC-2022-01-18 MPC-2022-01-18 Phot