Helenos

01872, 1971FG, J71F00G

All data for this body: [vot]

MPC data
Name (number) Helenos (1872)
Packed designation 01872
a 5.32175
e 0.04947
i / sin(i) 14.6400 / 0.25275
q 5.05846
Q 5.58503
ω 115.1345
Node 188.7837
m 340.7809
n 0.0803
Epoch 2459600.5
nobs 2145
nopp 32
Years observed 1954-2021
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent
 
ap
ep
sin(ip)
Value Standard error
G 0.150
H 10.860
Mass
D 0.02 0.021
pV 0.074 0.0096
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.02 0.021 0.021 Grav 2011ApJ...742...40G NEATM
0.07 0.781 0.781 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-2022-01-18 MPC-2022-01-18 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.86 MPC-2022-01-18 MPC-2022-01-18 Phot