1997 WS21

1997WS21, 10901, 1990 SJ13, 1990SJ13, J90S13J, J97W21S

All data for this body: [vot]

MPC data
Name (number) 1997 WS21 (10901)
a 2.21871
e 0.12026
i / sin(i) 2.8814 / 0.05027
q 1.95190
Q 2.48553
ω 248.2798
Node 167.2572
m 303.0831
n 0.2982
Epoch 2460200.5
nobs 1873
nopp 20
Years observed 1990-2023
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.219
ep 0.125
sin(ip) 0.056
Value Standard error
G 0.150
H 15.560
Mass
D 2.31 0.591
pV 0.300 0.1211
Rotational Period
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2189 0.1253 0.0556 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.31 0.591 0.591 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.300 0.1211 0.1211 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
15.56 MPC-2023-12-04 MPC-2023-12-04 Phot