1997 WJ20

1997WJ20, 17713, 1993 TC42, 1993TC42, 1999 GD49, 1999GD49, 2000 NX12, 2000NX12, J93T42C, J97W20J, J99G49D, K00N12X

All data for this body: [vot]

MPC data
Name (number) 1997 WJ20 (17713)
a 2.40150
e 0.08034
i / sin(i) 4.4980 / 0.07842
q 2.20855
Q 2.59445
ω 250.0470
Node 218.6828
m 89.6181
n 0.2648
Epoch 2460800.5
nobs 1864
nopp 21
Years observed 1993-2025
rms 0.72
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.402
ep 0.105
sin(ip) 0.091
G 0.150
H 15.360
Mass
D 2.62 0.518
pV 0.258 0.1089
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 19.538
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4016 0.1050 0.0906 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.62 0.518 0.518 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.258 0.1089 0.1089 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
15.36 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
K S 0.4283 0.6540 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.16 Bus VIS Carvano 2010A&A...510A..43C PHOT
S 0.999 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.9183 0.6540 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9523 0.6540 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V S 0.1273 0.6540 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT