Alkmene

00082, 1864 WA, 1864WA, 1952 BB, 1952BB, 1963 OA, 1963OA, 1973 GO, 1973GO, I64W00A, J52B00B, J63O00A, J73G00O

All data for this body: [vot]

MPC data
Name (number) Alkmene (82)
a 2.76248
e 0.22098
i / sin(i) 2.8260 / 0.04930
q 2.15204
Q 3.37292
ω 110.8341
Node 25.4265
m 288.2637
n 0.2147
Epoch 2460800.5
nobs 7991
nopp 81
Years observed 1864-2025
rms 0.58
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.762
ep 0.250
sin(ip) 0.047
G 0.150
H 8.260
Mass 3.431e+17 8.544e+16
D 63.99 0.350
pV 0.189 0.0066
Value
Rotational Period 12.990
Period quality 3
Spectral Class S
Spectral Class Score 46.300
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7624 0.2503 0.0472 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.4250e+17 1.2084e+17 1.2084e+17 Fienga INPOP19a Ephem
4.4360e+17 Folkner 2014IPNPR.196C...1F Ephem
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
57.62 0.710 0.710 Masiero 2014ApJ...791..121M NEATM
57.90 1.300 1.300 Hanus 2018Icar..309..297H RADIOMETRY_TPM
58.47 5.850 5.850 Ali-Lagoa 2018A&A...612A..85A NEATM
58.60 1.200 1.200 Hanus 2018Icar..309..297H RADIOMETRY_TPM
60.96 1.500 1.500 Tedesco 2002AJ....123.1056T STM
63.09 2.200 2.200 Ryan&Woodward 2010AJ....140..933R IRAS-STM
64.01 0.730 0.730 Usui 2011PASJ...63.1117U NEATM
64.67 12.930 12.930 Ali-Lagoa 2018A&A...612A..85A NEATM
67.90 2.200 2.200 Masiero 2012ApJ...759L...8M NEATM
68.25 3.293 3.293 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
73.95 0.698 0.698 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.142 0.0192 0.0192 Masiero 2011ApJ...741...68M NEATM
0.167 0.0166 0.0166 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.167 0.0240 0.0240 Masiero 2012ApJ...759L...8M NEATM
0.194 0.0138 0.0138 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.207 0.0110 0.0110 Tedesco 2002AJ....123.1056T STM
0.228 0.0910 0.0910 Ali-Lagoa 2018A&A...612A..85A NEATM
0.230 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM
0.279 0.0560 0.0560 Ali-Lagoa 2018A&A...612A..85A 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
8.26 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
12.9984 2 Synodic Behrend LCDB Lightcurve
12.999 3 Synodic Harris 1984Icar...57..251H Lightcurve
12.99922 3- Synodic Behrend LCDB Lightcurve
13.00078 2 Sidereal Durech 2009A&A...493..291D Model
13.00078 2 Sidereal Durech LCDB Model
13.00079 2 Sidereal Hanus 2011A&A...530A.134H Model
13.00079 2 Sidereal Martikainen 2021A&A...649A..98M Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
Q Tholen VIS Tatsumi 2022A&A...664A.107T SPEC
S Bus-DeMeo VISNIR DeMeo 2009Icar..202..160D SPEC
S Tholen VIS Tatsumi 2022A&A...664A.107T SPEC
S 0.910000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
S 0.990000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
S 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
Sp Howell VISNIR Howell 1994JGR....9910847H PHOT
Sq Bus VIS Bus 2002Icar..158..146B SPEC