Helenabates

1979 SX14, 1979SX14, 2001 OO8, 2001OO8, 28994, J79S14X, K01O08O

All data for this body: [vot]

MPC data
Name (number) Helenabates (28994)
a 2.70061
e 0.23655
i / sin(i) 5.1187 / 0.08922
q 2.06178
Q 3.33943
ω 198.5836
Node 141.8902
m 112.0820
n 0.2221
Epoch 2460800.5
nobs 1308
nopp 21
Years observed 1979-2025
rms 0.79
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.699
ep 0.202
sin(ip) 0.072
G 0.150
H 15.320
Mass
D 5.73 0.054
pV 0.054 0.0074
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 5.874
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6992 0.2019 0.0724 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.33 1.420 1.420 Masiero 2021PSJ.....2..162M NEATM
4.78 1.320 1.320 Masiero 2021PSJ.....2..162M NEATM
4.91 1.410 1.410 Masiero 2012ApJ...759L...8M NEATM
5.74 0.054 0.054 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.051 0.0079 0.0079 Masiero 2011ApJ...741...68M NEATM
0.064 0.0260 0.0440 Masiero 2021PSJ.....2..162M NEATM
0.073 0.0300 0.0300 Masiero 2012ApJ...759L...8M NEATM
0.078 0.0340 0.0600 Masiero 2021PSJ.....2..162M 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
15.32 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C 0.979 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT