Helina

01075, 1906 YG, 1906YG, 1916 WH, 1916WH, 1926 SC, 1926SC, 1930 KV, 1930KV, 1965 CB, 1965CB, J06Y00G, J16W00H, J26S00C, J30K00V, J65C00B

All data for this body: [vot]

MPC data
Name (number) Helina (1075)
a 3.01498
e 0.10887
i / sin(i) 11.5321 / 0.19992
q 2.68674
Q 3.34322
ω 251.0509
Node 100.6985
m 323.3476
n 0.1883
Epoch 2460800.5
nobs 7669
nopp 42
Years observed 1906-2025
rms 0.54
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 3.014
ep 0.073
sin(ip) 0.180
G 0.150
H 10.380
Mass
D 30.74 0.296
pV 0.122 0.0051
Value
Rotational Period 44.000
Period quality 3-
Spectral Class Xe
Spectral Class Score 5.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
221 Eos 0 Eos Novakovic 2019EPSC...13.1671N HCM
221 Eos 606 Eos -0.6600 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0136 0.0728 0.1803 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
26.20 0.410 0.410 Masiero 2012ApJ...759L...8M NEATM
30.39 7.760 7.760 Nugent 2016AJ....152...63N NEATM
34.48 0.580 0.580 Masiero 2012ApJ...759L...8M NEATM
35.44 1.689 1.689 Ryan&Woodward 2010AJ....140..933R IRAS-STM
35.52 1.500 1.500 Tedesco 2002AJ....123.1056T STM
37.72 3.770 3.770 Ali-Lagoa 2018A&A...612A..85A NEATM
37.93 0.850 0.850 Usui 2011PASJ...63.1117U NEATM
38.33 2.108 2.108 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.106 0.0118 0.0118 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.110 0.0220 0.0220 Ali-Lagoa 2018A&A...612A..85A NEATM
0.110 0.0700 0.0700 Nugent 2016AJ....152...63N NEATM
0.122 0.0110 0.0110 Tedesco 2002AJ....123.1056T STM
0.123 0.0116 0.0116 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.129 0.0090 0.0090 Masiero 2012ApJ...759L...8M NEATM
0.224 0.0430 0.0430 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
10.38 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
44.554 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
44.67677 2 Sidereal Martikainen 2021A&A...649A..98M Model
44.6768 2 Sidereal Durech 2016A&A...587A..48D Model
44.677 2 Sidereal Hanus 2018Icar..299...84H Model
44.677 2 Sidereal Hanus LCDB Model
44.679 2 Sidereal Durech 2023A&A...675A..24D Model
44.9 3- Synodic Behrend LCDB Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
K Tholen VIS Lazzaro 2004Icar..172..179L SPEC
M S 0.620000 0.240000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
S DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT
Xe Bus VIS Lazzaro 2004Icar..172..179L SPEC