1999 GD18

1999GD18, 16038, 1960 WD1, 1960WD1, 1981 UO18, 1981UO18, 1994 EH3, 1994EH3, J60W01D, J81U18O, J94E03H, J99G18D

All data for this body: [vot]

MPC data
Name (number) 1999 GD18 (16038)
a 3.01924
e 0.08161
i / sin(i) 11.5313 / 0.19990
q 2.77285
Q 3.26563
ω 21.1591
Node 49.4882
m 90.6812
n 0.1879
Epoch 2460800.5
nobs 5326
nopp 26
Years observed 1960-2025
rms 0.57
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.021
ep 0.072
sin(ip) 0.186
G 0.150
H 12.460
Mass
D 12.40 0.166
pV 0.166 0.0201
Value
Rotational Period 6.900
Period quality 2
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0209 0.0723 0.1863 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
12.06 0.231 0.231 Masiero 2011ApJ...741...68M NEATM
12.75 0.238 0.238 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.157 0.0273 0.0273 Masiero 2011ApJ...741...68M NEATM
0.176 0.0297 0.0297 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
12.46 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
6.95 2 Synodic Waszczak 2015AJ....150...75W Lightcurve