Astyanax

01871, 1971 FF, 1971FF, J71F00F

All data for this body: [vot]

MPC data
Name (number) Astyanax (1871)
a 5.22045
e 0.03340
i / sin(i) 8.6119 / 0.14974
q 5.04611
Q 5.39478
ω 166.7560
Node 145.7665
m 36.6990
n 0.0826
Epoch 2460800.5
nobs 2918
nopp 35
Years observed 1971-2025
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent
 
ap
ep
sin(ip)
G 0.150
H 11.240
Mass
D 27.67 0.389
pV 0.081 0.0102
Value
Rotational Period 6.510
Period quality 2+
Spectral Class M
Spectral Class Score 5.150
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
27.27 0.730 0.730 Grav 2011ApJ...742...40G NEATM
27.83 0.460 0.460 Grav 2012ApJ...759...49G NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.076 0.0140 0.0140 Grav 2012ApJ...759...49G NEATM
0.086 0.0150 0.0150 Grav 2011ApJ...742...40G 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
11.24 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
6.5163 2 Sidereal Durech 2023A&A...675A..24D Model
6.517 2+ Synodic Kalup 2021ApJS..254....7K Lightcurve
6.52 2- Synodic Stephens 2014MPBu...41...95S Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D Dahlgren-Lagerkvist VIS Fornasier 2004Icar..172..221F SPEC
DP Dahlgren-Lagerkvist VIS Fornasier 2004Icar..172..221F SPEC
M P 0.480000 0.470000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
M P 0.550000 0.380000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC