Helma

01273, 1932 PF, 1932PF, J32P00F

All data for this body: [vot]

MPC data
Name (number) Helma (1273)
a 2.39374
e 0.16100
i / sin(i) 5.4013 / 0.09413
q 2.00836
Q 2.77913
ω 48.9396
Node 296.4561
m 4.3428
n 0.2661
Epoch 2460800.5
nobs 7859
nopp 36
Years observed 1932-2025
rms 0.52
Best values
[raw, vot]

Value Standard error
Parent Vesta (4)
 
ap 2.394
ep 0.123
sin(ip) 0.109
G 0.150
H 13.020
Mass
D 7.26 0.014
pV 0.247 0.0195
Value
Rotational Period 6.085
Period quality 3
Spectral Class V
Spectral Class Score 10.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
4 Vesta 0 Vesta Novakovic 2019EPSC...13.1671N HCM
4 Vesta 401 Vesta Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3938 0.1229 0.1086 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.39 0.610 0.610 Usui 2011PASJ...63.1117U NEATM
10.90 2.180 2.180 Ali-Lagoa 2018A&A...612A..85A NEATM
5.30 0.530 0.530 Masiero 2014ApJ...791..121M NEATM
6.28 0.290 0.290 Masiero 2012ApJ...759L...8M NEATM
7.26 0.014 0.014 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.119 0.0480 0.0480 Ali-Lagoa 2018A&A...612A..85A NEATM
0.120 0.1600 0.1600 Masiero 2014ApJ...791..121M NEATM
0.259 0.0242 0.0242 Masiero 2011ApJ...741...68M NEATM
0.340 0.0470 0.0470 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
13.02 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
5.0 1 Synodic Behrend LCDB Lightcurve
6.073 3 Synodic Behrend LCDB Lightcurve
6.085 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
6.0851 3 Synodic Higgins 2007MPBu...34...16H Lightcurve
6.086 2- Synodic Erasmus 2020ApJS..247...13E Lightcurve
6.0864 2 Sidereal Durech 2020A&A...643A..59D Model
6.08648 2 Sidereal Durech 2018A&A...617A..57D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
V Tholen VIS Binzel 1993Sci...260..186B SPEC
V 1.000000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC