1998HE1

18691, 1992FM3, J92F03M, J98H01E

All data for this body: [vot]

MPC data
Name (number) 1998HE1 (18691)
Packed designation 18691
a 3.19277
e 0.12837
i / sin(i) 7.6422 / 0.13299
q 2.78292
Q 3.60262
ω 278.7753
Node 10.5116
m 346.8044
n 0.1728
Epoch 2459600.5
nobs 1661
nopp 21
Years observed 1992-2021
rms 0.51
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.185
ep 0.137
sin(ip) 0.138
Value Standard error
G 0.150
H 13.340
Mass
D 5.61 0.328
pV 0.323 0.0829
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1846 0.1374 0.1376 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.61 0.328 0.328 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.323 0.0829 0.0829 Masiero 2011ApJ...741...68M 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
13.34 MPC-2022-01-18 MPC-2022-01-18 Phot