Heco

19156, 1990 SE4, 1990SE4, 1999 TK1, 1999TK1, J90S04E, J99T01K

All data for this body: [vot]

MPC data
Name (number) Heco (19156)
a 2.70092
e 0.00766
i / sin(i) 1.2456 / 0.02174
q 2.68024
Q 2.72160
ω 297.4186
Node 213.0335
m 146.3751
n 0.2220
Epoch 2460800.5
nobs 3782
nopp 24
Years observed 1990-2025
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.701
ep 0.045
sin(ip) 0.036
G 0.150
H 13.610
Mass
D 5.80 0.233
pV 0.145 0.0154
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7007 0.0452 0.0357 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.80 0.233 0.233 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.145 0.0154 0.0154 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
13.61 MPC-2023-12-04 MPC-2023-12-04 Phot