Helga

00522, 1902 WB, 1902WB, 1904 AF, 1904AF, 1936 QP, 1936QP, J02W00B, J04A00F, J36Q00P

All data for this body: [vot]

MPC data
Name (number) Helga (522)
a 3.62779
e 0.08620
i / sin(i) 4.4197 / 0.07706
q 3.31509
Q 3.94049
ω 249.3437
Node 116.5332
m 293.9831
n 0.1426
Epoch 2460800.5
nobs 5942
nopp 68
Years observed 1904-2025
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.630
ep 0.038
sin(ip) 0.058
G 0.150
H 9.020
Mass
D 100.18 1.102
pV 0.039 0.0023
Value
Rotational Period 8.120
Period quality 3
Spectral Class X
Spectral Class Score 21.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
522 Helga -1 Helga -1.0000 Nesvorny 2024ApJS..274...25N HCM-2024
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.6300 0.0385 0.0583 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
100.76 1.230 1.230 Usui 2011PASJ...63.1117U NEATM
101.22 3.500 3.500 Tedesco 2002AJ....123.1056T STM
104.42 7.747 7.747 Ryan&Woodward 2010AJ....140..933R IRAS-STM
105.56 21.110 21.110 Ali-Lagoa 2018A&A...612A..85A NEATM
107.28 9.370 9.370 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
108.37 10.840 10.840 Ali-Lagoa 2018A&A...612A..85A NEATM
83.70 4.850 4.850 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.036 0.0060 0.0060 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.037 0.0055 0.0055 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.039 0.0030 0.0030 Tedesco 2002AJ....123.1056T STM
0.041 0.0080 0.0080 Ali-Lagoa 2018A&A...612A..85A NEATM
0.043 0.0170 0.0170 Ali-Lagoa 2018A&A...612A..85A NEATM
0.057 0.0133 0.0133 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
9.02 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
2.9 2 Synodic Lagerkvist 2001Icar..149..190L Lightcurve
8.0 1+ Synodic Behrend LCDB Lightcurve
8.118 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
8.124 2 Synodic Chiorny 2007P&SS...55..986C Lightcurve
8.126 2 Synodic Licchelli 2006MPBu...33...11L Lightcurve
8.126 2+ Synodic Fauerbach 2007MPBu...34...57F Lightcurve
8.1285 2 Synodic Behrend LCDB Lightcurve
8.129 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
8.129 3 Synodic Behrend LCDB Lightcurve
8.129 3 Synodic Carbognani 2019P&SS..169...15C Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
PD Tholen VIS Lagerkvist 2005A&A...432..349L SPEC
C 0.860000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
P Fornasier VIS Fornasier 2011Icar..214..131F SPEC
X Bus VIS Fornasier 2011Icar..214..131F SPEC
X Bus VIS Lazzaro 2004Icar..172..179L SPEC
X Tholen VIS Lazzaro 2004Icar..172..179L SPEC
X 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
Xk Bus-DeMeo VISNIR Fornasier 2011Icar..214..131F SPEC