Automedon

02920, 1981 JR, 1981JR, J81J00R

All data for this body: [vot]

MPC data
Name (number) Automedon (2920)
a 5.11622
e 0.02776
i / sin(i) 21.1113 / 0.36018
q 4.97420
Q 5.25824
ω 200.2694
Node 230.9467
m 80.5686
n 0.0852
Epoch 2460800.5
nobs 6454
nopp 33
Years observed 1981-2025
rms 0.54
Best values
[raw, vot]

Value Standard error
Parent
 
ap
ep
sin(ip)
G 0.150
H 8.840
Mass
D 103.92 1.161
pV 0.043 0.0029
Value
Rotational Period 10.210
Period quality 3
Spectral Class D
Spectral Class Score 28.666
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
109.40 3.200 3.200 Fernandez 2003AJ....126.1563F RADIOMETRY_STM
111.01 7.500 7.500 Tedesco 2002AJ....123.1056T STM
112.31 7.820 7.820 Ryan&Woodward 2010AJ....140..933R IRAS-STM
112.65 11.270 11.270 Ali-Lagoa 2018A&A...612A..85A NEATM
113.11 2.250 2.250 Usui 2011PASJ...63.1117U NEATM
122.91 9.661 9.661 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
123.24 12.320 12.320 Ali-Lagoa 2018A&A...612A..85A NEATM
130.40 3.800 3.800 Fernandez 2003AJ....126.1563F RADIOMETRY_STM
88.57 1.800 1.800 Grav 2012ApJ...759...49G NEATM
91.88 10.460 10.460 Grav 2011ApJ...742...40G NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.034 0.0070 0.0070 Ali-Lagoa 2018A&A...612A..85A NEATM
0.037 0.0063 0.0063 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.040 0.0080 0.0080 Ali-Lagoa 2018A&A...612A..85A NEATM
0.043 0.0070 0.0070 Tedesco 2002AJ....123.1056T STM
0.044 0.0068 0.0068 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.064 0.0190 0.0190 Grav 2011ApJ...742...40G NEATM
0.068 0.0090 0.0090 Grav 2012ApJ...759...49G 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
8.84 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
10.192 3 Synodic Stephens 2020MPBu...47...43S Lightcurve
10.206 3 Synodic Stephens 2021MPBu...48..167S Lightcurve
10.212 3 Synodic Molnar 2008MPBu...35...82M Lightcurve
10.2127 2 Sidereal Durech 2020A&A...643A..59D Model
10.214 Synodic McNeill 2021PSJ.....2....6M Lightcurve
10.218 3 Synodic Stephens 2022MPBu...49...51S Lightcurve
10.22 2+ Synodic Stephens 2019MPBu...46...73S Lightcurve
10.22 3 Synodic Mottola 2011AJ....141..170M Lightcurve
10.223 3- Synodic Stephens 2017MPBu...44..312S Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D Tholen VIS Xu 1995Icar..115....1X SPEC
D 0.980000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
D 0.990000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
D D 0.7250 0.7880 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
D D 0.9210 0.7880 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT