Williamhang

1993 RD20, 1993RD20, 1999 CJ68, 1999CJ68, 31501, J93R20D, J99C68J

All data for this body: [vot]

MPC data
Name (number) Williamhang (31501)
a 2.45836
e 0.14250
i / sin(i) 2.0973 / 0.03660
q 2.10804
Q 2.80868
ω 210.8086
Node 307.9948
m 277.8874
n 0.2557
Epoch 2460800.5
nobs 1673
nopp 21
Years observed 1993-2025
rms 0.77
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.460
ep 0.172
sin(ip) 0.051
G 0.150
H 15.240
Mass
D 2.12 0.439
pV 0.431 0.2783
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 4.830
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4601 0.1719 0.0514 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.12 0.439 0.439 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.431 0.2783 0.2783 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
15.24 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
S 0.805 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT