Helensteel

09038, 1990 VE1, 1990VE1, J90V01E

All data for this body: [vot]

MPC data
Name (number) Helensteel (9038)
a 2.62150
e 0.16804
i / sin(i) 14.3641 / 0.24808
q 2.18097
Q 3.06203
ω 221.5433
Node 138.0572
m 80.5049
n 0.2322
Epoch 2460800.5
nobs 5510
nopp 27
Years observed 1950-2025
rms 0.55
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.620
ep 0.130
sin(ip) 0.233
G 0.150
H 13.380
Mass
D 5.89 0.171
pV 0.320 0.0489
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 8.008
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 0 Eunomia Novakovic 2019EPSC...13.1671N HCM
15 Eunomia 502 Eunomia -0.3200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6199 0.1299 0.2334 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.89 0.190 0.190 Masiero 2012ApJ...759L...8M NEATM
5.91 0.390 0.390 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.319 0.0602 0.0602 Masiero 2011ApJ...741...68M NEATM
0.322 0.0840 0.0840 Masiero 2012ApJ...759L...8M 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
13.38 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
D S 0.1363 0.2750 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.26 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S None None Movis NIR Popescu 2018A&A...617A..12P PHOT
S S 0.7480 0.2750 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT