Hephaistos

02212, 1978SB, J78S00B

All data for this body: [vot]

MPC data
Name (number) Hephaistos (2212)
Packed designation 02212
a 2.15953
e 0.83736
i / sin(i) 11.5433 / 0.20011
q 0.35122
Q 3.96785
ω 209.4125
Node 27.5132
m 235.3099
n 0.3106
Epoch 2459600.5
nobs 2911
nopp 34
Years observed 1978-2021
rms 0.60
Best values
[raw, vot]

Value Standard error
Parent
 
ap
ep
sin(ip)
Value Standard error
G 0.150
H 13.330
Mass
D 5.12 0.038
pV 0.178 0.0254
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.57 0.085 0.085 Mainzer 2012ApJ...760L..12M NEATM
5.18 0.160 0.160 Usui 2011PASJ...63.1117U NEATM
5.54 0.044 0.044 Mainzer 2011ApJ...743..156M NEATM
5.99 1.200 1.200 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.163 0.0270 0.0270 Mainzer 2011ApJ...743..156M NEATM
0.253 0.1010 0.1010 Ali-Lagoa 2018A&A...612A..85A NEATM
0.342 0.1110 0.1110 Mainzer 2012ApJ...760L..12M 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
13.33 MPC-2022-01-18 MPC-2022-01-18 Phot