Ledouanier

12261, 1989 SJ4, 1989SJ4, 1989 TY4, 1989TY4, 1992 PG1, 1992PG1, J89S04J, J89T04Y, J92P01G

All data for this body: [vot]

MPC data
Name (number) Ledouanier (12261)
a 2.22857
e 0.15858
i / sin(i) 5.9306 / 0.10332
q 1.87517
Q 2.58197
ω 116.4306
Node 163.7616
m 330.1475
n 0.2963
Epoch 2460800.5
nobs 2734
nopp 23
Years observed 1989-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.229
ep 0.127
sin(ip) 0.105
G 0.150
H 15.310
Mass
D 2.33 0.390
pV 0.298 0.0767
Value
Rotational Period
Period quality None
Spectral Class A
Spectral Class Score 5.844
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2287 0.1272 0.1050 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.33 0.390 0.390 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.298 0.0767 0.0767 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
15.31 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
A 0.974 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S None None Movis NIR Popescu 2018A&A...617A..12P PHOT