1999 GP18

1999GP18, 11209, 1990 OB6, 1990OB6, 1993 BA15, 1993BA15, 1995 QW1, 1995QW1, 1998 BV10, 1998BV10, J90O06B, J93B15A, J95Q01W, J98B10V, J99G18P

All data for this body: [vot]

MPC data
Name (number) 1999 GP18 (11209)
a 2.98919
e 0.05566
i / sin(i) 11.5491 / 0.20021
q 2.82280
Q 3.15557
ω 150.3681
Node 104.4564
m 318.4883
n 0.1907
Epoch 2460800.5
nobs 3965
nopp 26
Years observed 1990-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 2.990
ep 0.075
sin(ip) 0.181
G 0.150
H 12.940
Mass
D 9.59 0.133
pV 0.175 0.0341
Value
Rotational Period 8.217
Period quality 2
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
221 Eos 0 Eos Novakovic 2019EPSC...13.1671N HCM
221 Eos 606 Eos -0.7100 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.9902 0.0751 0.1808 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
9.59 0.133 0.133 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.175 0.0341 0.0341 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
12.94 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
8.21707 2 Sidereal Durech 2018A&A...617A..57D Model
8.2171 2 Sidereal Durech 2023A&A...675A..24D Model