Alma

00390, 1894 FA, 1894FA, 1930 QW, 1930QW, 1950 BV, 1950BV, 1950 CH, 1950CH, 1953 YB, 1953YB, 1963 DF, 1963DF, I94F00A, J30Q00W, J50B00V, J50C00H, J53Y00B, J63D00F

All data for this body: [vot]

MPC data
Name (number) Alma (390)
a 2.65171
e 0.13185
i / sin(i) 12.1407 / 0.21031
q 2.30208
Q 3.00135
ω 192.1790
Node 305.0871
m 145.2731
n 0.2283
Epoch 2460800.5
nobs 6023
nopp 51
Years observed 1894-2025
rms 0.60
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.652
ep 0.172
sin(ip) 0.223
G 0.150
H 10.200
Mass
D 26.14 0.131
pV 0.237 0.0076
Value
Rotational Period 3.741
Period quality 3
Spectral Class S
Spectral Class Score 30.972
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6517 0.1721 0.2225 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
18.36 0.620 0.620 Masiero 2012ApJ...759L...8M NEATM
23.74 1.400 1.400 Tedesco 2002AJ....123.1056T STM
24.00 1.632 1.632 Ryan&Woodward 2010AJ....140..933R IRAS-STM
24.09 2.410 2.410 Ali-Lagoa 2018A&A...612A..85A NEATM
24.30 0.400 0.400 Hanus 2018Icar..309..297H RADIOMETRY_TPM
24.31 0.530 0.530 Usui 2011PASJ...63.1117U NEATM
25.30 0.600 0.600 Hanus 2018Icar..309..297H RADIOMETRY_TPM
25.69 0.180 0.180 Masiero 2014ApJ...791..121M NEATM
26.00 5.200 5.200 Ali-Lagoa 2018A&A...612A..85A NEATM
30.59 3.119 3.119 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
31.16 0.299 0.299 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.127 0.0205 0.0205 Masiero 2011ApJ...741...68M NEATM
0.142 0.0272 0.0272 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.219 0.0290 0.0290 Tedesco 2002AJ....123.1056T STM
0.220 0.0279 0.0279 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.252 0.1010 0.1010 Ali-Lagoa 2018A&A...612A..85A NEATM
0.270 0.0100 0.0100 Masiero 2014ApJ...791..121M NEATM
0.293 0.0590 0.0590 Ali-Lagoa 2018A&A...612A..85A NEATM
0.366 0.0400 0.0400 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
10.20 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.74097 3 Synodic Behrend LCDB Lightcurve
3.74 3 Synodic Stephens 2005MPBu...32....2S Lightcurve
3.74116 2 Sidereal Durech 2009A&A...493..291D Model
3.74116 2 Sidereal Hanus 2011A&A...530A.134H Model
3.74117 2 Sidereal Hanus 2013A&A...551A..67H Model
3.74117 3 Synodic Behrend LCDB Lightcurve
4.0 1 Synodic Angeli 2001AJ....121.2245A Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S Bus VIS Lazzaro 2004Icar..172..179L SPEC
S Tholen VIS Lazzaro 1999Icar..142..445L SPEC
S Tholen VIS Lazzaro 2004Icar..172..179L SPEC
S 0.970000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
S 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.8537 0.8537 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT