Hiroko

06225, 1981 EK12, 1981EK12, 1991 GH6, 1991GH6, J81E12K, J91G06H

All data for this body: [vot]

MPC data
Name (number) Hiroko (6225)
a 2.21113
e 0.03347
i / sin(i) 5.3456 / 0.09316
q 2.13713
Q 2.28513
ω 321.9576
Node 218.4388
m 330.5649
n 0.2998
Epoch 2460200.5
nobs 1899
nopp 20
Years observed 1981-2023
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.211
ep 0.097
sin(ip) 0.104
Value Standard error
G 0.150
H 15.380
Mass
D 2.10 0.434
pV 0.332 0.0887
Rotational Period
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2114 0.0967 0.1040 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.10 0.434 0.434 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.332 0.0887 0.0887 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
15.38 MPC-2023-12-04 MPC-2023-12-04 Phot