1981UA23

15221, 1981WX2, 1986ED4, 1998US15, J81U23A, J81W02X, J86E04D, J98U15S

All data for this body: [vot]

MPC data
Name (number) 1981UA23 (15221)
Packed designation 15221
a 2.26149
e 0.16115
i / sin(i) 3.0849 / 0.05382
q 1.89707
Q 2.62592
ω 338.7257
Node 92.9452
m 279.5048
n 0.2898
Epoch 2459600.5
nobs 1636
nopp 20
Years observed 1981-2021
rms 0.72
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.261
ep 0.170
sin(ip) 0.042
Value Standard error
G 0.150
H 14.980
Mass
D 2.43 0.280
pV 0.354 0.0708
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2608 0.1701 0.0420 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.38 0.369 0.369 Masiero 2011ApJ...741...68M NEATM
2.50 0.429 0.429 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.340 0.0932 0.0932 Masiero 2011ApJ...741...68M NEATM
0.374 0.1090 0.1090 Masiero 2011ApJ...741...68M 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
14.98 MPC-2022-01-18 MPC-2022-01-18 Phot