1999 AU

1999AU, 18744, 1986 RZ9, 1986RZ9, J86R09Z, J99A00U

All data for this body: [vot]

MPC data
Name (number) 1999 AU (18744)
a 2.35533
e 0.14761
i / sin(i) 12.8016 / 0.22158
q 2.00765
Q 2.70301
ω 281.9533
Node 310.2807
m 359.1309
n 0.2727
Epoch 2460800.5
nobs 4419
nopp 25
Years observed 1954-2025
rms 0.60
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.355
ep 0.169
sin(ip) 0.237
G 0.150
H 13.870
Mass
D 8.32 0.037
pV 0.122 0.0011
Value
Rotational Period 21.000
Period quality 1
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3553 0.1692 0.2368 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.09 0.050 0.050 Masiero 2014ApJ...791..121M NEATM
8.43 2.050 2.050 Masiero 2020PSJ.....1....5M NEATM
8.58 0.054 0.054 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.112 0.0610 0.0610 Masiero 2020PSJ.....1....5M NEATM
0.122 0.0011 0.0011 Masiero 2011ApJ...741...68M NEATM
0.210 0.0200 0.0200 Masiero 2014ApJ...791..121M 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
13.87 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
21.9 1 Synodic Behrend LCDB Lightcurve