1999 AU9

1999AU9, 1978 WO6, 1978WO6, 31411, J78W06O, J99A09U

All data for this body: [vot]

MPC data
Name (number) 1999 AU9 (31411)
a 2.19290
e 0.12859
i / sin(i) 5.3917 / 0.09396
q 1.91091
Q 2.47488
ω 308.6602
Node 76.1202
m 138.2556
n 0.3035
Epoch 2460800.5
nobs 2908
nopp 21
Years observed 1978-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.193
ep 0.102
sin(ip) 0.080
G 0.150
H 15.050
Mass
D 2.20 0.527
pV 0.334 0.2601
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 9.949
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.1933 0.1016 0.0802 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.20 0.527 0.527 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.334 0.2601 0.2601 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
15.05 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
Ds Ds None None Movis NIR Popescu 2018A&A...617A..12P PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.99 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.9948 0.9948 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT