Althaea

00119, 1872 GA, 1872GA, 1972 KO, 1972KO, I72G00A, J72K00O

All data for this body: [vot]

MPC data
Name (number) Althaea (119)
a 2.58050
e 0.08201
i / sin(i) 5.7872 / 0.10083
q 2.36887
Q 2.79213
ω 170.3502
Node 203.6146
m 154.8074
n 0.2378
Epoch 2460800.5
nobs 4686
nopp 71
Years observed 1872-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.581
ep 0.057
sin(ip) 0.110
G 0.150
H 8.340
Mass
D 59.65 0.310
pV 0.219 0.0055
Value
Rotational Period 11.480
Period quality 3
Spectral Class S
Spectral Class Score 44.500
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5814 0.0568 0.1099 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
49.84 1.447 1.447 Ryan&Woodward 2010AJ....140..933R IRAS-STM
57.30 1.100 1.100 Tedesco 2002AJ....123.1056T STM
58.79 0.620 0.620 Usui 2011PASJ...63.1117U NEATM
59.34 1.460 1.460 Masiero 2014ApJ...791..121M NEATM
59.77 5.980 5.980 Ali-Lagoa 2018A&A...612A..85A NEATM
60.15 1.280 1.280 Masiero 2012ApJ...759L...8M NEATM
61.09 0.439 0.439 Masiero 2011ApJ...741...68M NEATM
66.34 2.528 2.528 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
68.60 6.860 6.860 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.173 0.0135 0.0135 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.186 0.0370 0.0370 Ali-Lagoa 2018A&A...612A..85A NEATM
0.203 0.0226 0.0226 Masiero 2011ApJ...741...68M NEATM
0.209 0.0350 0.0350 Masiero 2012ApJ...759L...8M NEATM
0.210 0.0100 0.0100 Masiero 2014ApJ...791..121M NEATM
0.231 0.0100 0.0100 Tedesco 2002AJ....123.1056T STM
0.246 0.0490 0.0490 Ali-Lagoa 2018A&A...612A..85A NEATM
0.306 0.0180 0.0180 Ryan&Woodward 2010AJ....140..933R IRAS-STM
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
8.34 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
11.46512 2 Sidereal Durech 2009A&A...493..291D Model
11.46513 2 Sidereal Martikainen 2021A&A...649A..98M Model
11.46514 2 Sidereal Hanus 2011A&A...530A.134H Model
11.466 3 Synodic Shevchenko 2002Icar..155..365S Lightcurve
11.469 2 Synodic Behrend LCDB Lightcurve
11.48037 2 Sidereal Tungalag 2002KFNT...18..508T Model
11.484 3 Synodic Gil 1990MPBu...17...15H Lightcurve
12.0 1 Synodic Weidenschilling 1990Icar...86..402W Lightcurve
8.0 1 Synodic Behrend LCDB Lightcurve
8.0 2- 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
A Tholen VIS Lazzaro 2004Icar..172..179L SPEC
Ld Bus VIS Lazzaro 2004Icar..172..179L SPEC
S Bus-DeMeo VISNIR DeMeo 2009Icar..202..160D SPEC
S 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
S 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
S L 0.700000 0.290000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
S S 1.0000 0.7230 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
SI Bus VIS Bus 2002Icar..158..146B SPEC