1999 WL20

1999WL20, 45033, J99W20L

All data for this body: [vot]

MPC data
Name (number) 1999 WL20 (45033)
a 2.52936
e 0.11428
i / sin(i) 10.5366 / 0.18286
q 2.24030
Q 2.81842
ω 303.2127
Node 206.2731
m 49.5217
n 0.2450
Epoch 2460800.5
nobs 1980
nopp 21
Years observed 1997-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.530
ep 0.166
sin(ip) 0.194
G 0.150
H 15.210
Mass
D 4.67 0.123
pV 0.098 0.0072
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 0.067
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5296 0.1656 0.1938 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.67 0.123 0.123 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.098 0.0072 0.0072 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
15.21 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 S 0.0111 0.0111 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT