Helio

00895, 1906 MB, 1906MB, 1918 NA, 1918NA, J06M00B, J18N00A

All data for this body: [vot]

MPC data
Name (number) Helio (895)
a 3.20736
e 0.14394
i / sin(i) 26.0673 / 0.43943
q 2.74568
Q 3.66904
ω 177.0533
Node 264.5558
m 329.5259
n 0.1716
Epoch 2460200.5
nobs 4144
nopp 48
Years observed 1906-2023
rms 0.56
Best values
[raw, vot]

Value Standard error
Parent Euphrosyne (31)
 
ap 3.215
ep 0.176
sin(ip) 0.443
Value Standard error
G 0.150
H 8.360
Mass 1.924e+18 6.477e+17
D 123.44 0.849
pV 0.042 0.0015
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
31 Euphrosyne 901 Euphrosyne Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.2146 0.1764 0.4427 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.3677e+18 6.7695e+17 6.7695e+17 Fienga INPOP19a Ephem
2.5500e+18 Folkner 2014IPNPR.196C...1F Ephem
2.8000e+19 1.3700e+19 1.3700e+19 Zielenbach 2011AJ....142..120Z Deflec
6.8800e+18 1.3900e+19 1.3900e+19 Zielenbach 2011AJ....142..120Z Deflec
7.7500e+18 3.4300e+18 3.4300e+18 Zielenbach 2011AJ....142..120Z Deflec
8.2100e+18 3.4100e+18 3.4100e+18 Zielenbach 2011AJ....142..120Z Deflec
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
102.03 2.870 2.870 Masiero 2012ApJ...759L...8M NEATM
109.57 1.990 1.990 Masiero 2014ApJ...791..121M NEATM
112.40 nan nan Ali-Lagoa 2016A&A...591A..14A NEATM
119.32 1.549 1.549 Masiero 2011ApJ...741...68M NEATM
126.38 12.640 12.640 Ali-Lagoa 2018A&A...612A..85A NEATM
128.17 1.780 1.780 Usui 2011PASJ...63.1117U NEATM
138.43 13.840 13.840 Ali-Lagoa 2018A&A...612A..85A NEATM
141.90 3.500 3.500 Tedesco 2002AJ....123.1056T STM
144.74 40.810 40.810 Masiero 2020PSJ.....1....5M NEATM
150.93 2.526 2.526 Ryan&Woodward 2010AJ....140..933R IRAS-STM
155.12 7.646 7.646 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.035 0.0035 0.0035 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.037 0.0037 0.0037 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.038 0.0300 0.0300 Masiero 2020PSJ.....1....5M NEATM
0.042 0.0020 0.0020 Tedesco 2002AJ....123.1056T STM
0.046 0.0090 0.0090 Ali-Lagoa 2018A&A...612A..85A NEATM
0.055 0.0110 0.0110 Ali-Lagoa 2018A&A...612A..85A NEATM
0.059 0.0063 0.0063 Masiero 2011ApJ...741...68M NEATM
0.070 0.0200 0.0200 Masiero 2014ApJ...791..121M NEATM
0.089 0.0290 0.0290 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
8.36 MPC-2023-12-04 MPC-2023-12-04 Phot
Period data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
27.79 Woo 2001ASPC..246..251W Lightcurve
9.35 Brines 2017MPBu...44..145B Lightcurve
9.39 Polakis 2016MPBu...43..310P Lightcurve
9.39 Pal 2020ApJS..247...26P Lightcurve
9.39 Franco 2023MPBu...50...47F Lightcurve
9.40 Behrend LCDB Lightcurve
9.67 Danforth 1994MPBu...21....4D Lightcurve