1997 GR20

1997GR20, 1990 QH19, 1990QH19, 1993 FW78, 1993FW78, 43980, J90Q19H, J93F78W, J97G20R

All data for this body: [vot]

MPC data
Name (number) 1997 GR20 (43980)
a 2.51780
e 0.14337
i / sin(i) 1.1599 / 0.02024
q 2.15682
Q 2.87878
ω 293.5066
Node 28.8528
m 107.0288
n 0.2467
Epoch 2460200.5
nobs 1389
nopp 23
Years observed 1990-2023
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.515
ep 0.130
sin(ip) 0.019
Value Standard error
G 0.150
H 15.890
Mass
D 1.69 0.273
pV 0.358 0.1682
Rotational Period
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5147 0.1302 0.0186 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.69 0.273 0.273 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.358 0.1682 0.1682 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
15.89 MPC-2023-12-04 MPC-2023-12-04 Phot