1997 WC21

1997WC21, 52631, J97W21C

All data for this body: [vot]

MPC data
Name (number) 1997 WC21 (52631)
a 2.65558
e 0.30253
i / sin(i) 5.0912 / 0.08874
q 1.85219
Q 3.45897
ω 102.9947
Node 307.6553
m 110.3685
n 0.2278
Epoch 2460800.5
nobs 1973
nopp 18
Years observed 1997-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.658
ep 0.262
sin(ip) 0.115
G 0.150
H 14.540
Mass
D 3.37 0.088
pV 0.354 0.0392
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 7.696
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6575 0.2623 0.1149 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.37 0.088 0.088 Masiero 2011ApJ...741...68M NEATM
3.42 1.090 1.090 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.288 0.1910 0.1910 Masiero 2012ApJ...759L...8M NEATM
0.357 0.0400 0.0400 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
14.54 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 DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S S DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT
S S 0.6160 0.6160 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X 0.575 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
XS 0.06 Bus VIS Carvano 2010A&A...510A..43C PHOT