Helenos

01872, 1971 FG, 1971FG, J71F00G

All data for this body: [vot]

MPC data
Name (number) Helenos (1872)
a 5.32295
e 0.04963
i / sin(i) 14.6419 / 0.25278
q 5.05879
Q 5.58711
ω 116.0851
Node 188.7723
m 28.0943
n 0.0803
Epoch 2460200.5
nobs 2730
nopp 34
Years observed 1954-2023
rms 0.59
Best values
[raw, vot]

Value Standard error
Parent
 
ap
ep
sin(ip)
Value Standard error
G 0.150
H 10.770
Mass
D 33.33 0.409
pV 0.074 0.0096
Rotational Period
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
32.71 0.560 0.560 Grav 2011ApJ...742...40G NEATM
34.05 0.600 0.600 Grav 2012ApJ...759...49G NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.067 0.0120 0.0120 Grav 2012ApJ...759...49G NEATM
0.087 0.0160 0.0160 Grav 2011ApJ...742...40G 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
10.77 MPC-2023-12-04 MPC-2023-12-04 Phot