Themis

00024, 1853 GA, 1853GA, 1947 BA, 1947BA, 1955 OH, 1955OH, I53G00A, J47B00A, J55O00H

All data for this body: [vot]

MPC data
Name (number) Themis (24)
a 3.14274
e 0.11527
i / sin(i) 0.7368 / 0.01286
q 2.78046
Q 3.50502
ω 109.0345
Node 36.3894
m 21.4574
n 0.1769
Epoch 2460800.5
nobs 5260
nopp 95
Years observed 1853-2025
rms 0.77
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.135
ep 0.153
sin(ip) 0.019
G 0.150
H 7.220
Mass 5.413e+18 6.997e+17
D 184.11 1.627
pV 0.065 0.0056
Value
Rotational Period 8.370
Period quality 3
Spectral Class C
Spectral Class Score 93.090
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
24 Themis 0 Themis Novakovic 2019EPSC...13.1671N HCM
24 Themis 602 Themis 0.0000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1345 0.1534 0.0190 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.0600e+19 4.5700e+18 4.5700e+18 Fienga 2011CeMDA.111..363F Ephem
1.1300e+19 4.2800e+18 4.2800e+18 Baer 2008CeMDA.100...27B Deflec
1.2700e+19 Folkner 2014IPNPR.196C...1F Ephem
1.9900e+18 3.9800e+18 3.9800e+18 Aslan 2007ASPC..370...52A Ephem
2.1580e+18 2.4670e+18 2.4670e+18 Fienga 2017NSTIM.108.....V Ephem
3.7293e+18 1.5695e+18 1.5695e+18 Fienga INPOP19a Ephem
3.9600e+18 2.8100e+18 2.8100e+18 Zielenbach 2011AJ....142..120Z Deflec
4.7800e+18 1.8400e+18 1.8400e+18 Zielenbach 2011AJ....142..120Z Deflec
5.2500e+18 2.3400e+18 2.3400e+18 Zielenbach 2011AJ....142..120Z Deflec
5.7500e+18 2.5100e+18 2.5100e+18 Lopez-Garcia 1997dana.coll..199L Deflec
6.0400e+18 Folkner 2009IPNPR.178C...1F Ephem
6.1600e+18 1.8500e+18 1.8500e+18 Zielenbach 2011AJ....142..120Z Deflec
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
176.81 2.300 2.300 Usui 2011PASJ...63.1117U NEATM
184.75 3.170 3.170 Masiero 2012ApJ...759L...8M NEATM
193.21 19.320 19.320 Ali-Lagoa 2018A&A...612A..85A NEATM
195.52 4.360 4.360 Masiero 2014ApJ...791..121M NEATM
202.34 6.054 6.054 Masiero 2011ApJ...741...68M NEATM
208.73 20.870 20.870 Ali-Lagoa 2018A&A...612A..85A NEATM
215.00 15.000 15.000 Viikinkoski 2017A&A...607A.117 AO/LC
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.055 0.0110 0.0110 Ali-Lagoa 2018A&A...612A..85A NEATM
0.064 0.0130 0.0130 Ali-Lagoa 2018A&A...612A..85A NEATM
0.064 0.0157 0.0157 Masiero 2011ApJ...741...68M NEATM
0.070 0.0100 0.0100 Masiero 2014ApJ...791..121M NEATM
0.076 0.0160 0.0160 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
7.22 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
8.363 1 Synodic Van Houten Groeneveld 1979A&AS...35..223V Lightcurve
8.373 3 Synodic Behrend LCDB Lightcurve
8.374 2 Synodic Chiorny 2007P&SS...55..986C Lightcurve
8.374 3 Synodic Ferrais 2022MPBu...49..307F Lightcurve
8.374 3 Synodic Harris 1989Icar...77..171H Lightcurve
8.3741 3 Synodic Ferrais 2022MPBu...49..307F Lightcurve
8.374187 2 Sidereal Vernazza 2021A&A...654A..56V Model
8.374187 2 Sidereal Viikinkoski 2017A&A...607A.117V Model
8.37419 2 Sidereal Hanus 2016A&A...586A.108H Model
8.3743 3 Synodic Pilcher 2013MPBu...40...85P Lightcurve
8.3743 3 Synodic Pilcher LCDB Lightcurve
8.376 3 Synodic Ditteon 2007MPBu...34...59D Lightcurve
8.376 3 Synodic Pilcher 2014MPBu...41..250P Lightcurve
8.37677 2 Sidereal Higley 2008MPBu...35...63H Model
8.38 2 Synodic Tedesco LCDB Lightcurve
8.38 3 Synodic Harris 1983Icar...54...59H Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
B Bus-DeMeo NIR Marsset 2016A&A...586A..15M SPEC
B Bus VIS Bus 2002Icar..158..146B SPEC
B Bus VIS Fornasier 2014Icar..233..163F SPEC
B Tholen VIS Lazzaro 2004Icar..172..179L SPEC
B 0.995 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
C Bus-DeMeo VISNIR Clark 2010JGRE..115.6005C SPEC
C Bus-DeMeo VISNIR DeMeo 2009Icar..202..160D SPEC
C Bus-DeMeo VISNIR Ostrowski 2011Icar..212..682O SPEC
C Bus VIS Lazzaro 2004Icar..172..179L SPEC
C Tholen VIS Fornasier 2014Icar..233..163F SPEC
C 0.910000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
C 0.980000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
C 0.980000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC