1997 AF21

1997AF21, 08938, 1939 UD, 1939UD, 1942 RG, 1942RG, 1986 RX12, 1986RX12, 1986 SK2, 1986SK2, 1989 NS, 1989NS, J39U00D, J42R00G, J86R12X, J86S02K, J89N00S, J97A21F

All data for this body: [vot]

MPC data
Name (number) 1997 AF21 (8938)
a 2.14452
e 0.20374
i / sin(i) 2.4812 / 0.04329
q 1.70760
Q 2.58144
ω 339.7716
Node 2.0165
m 116.1142
n 0.3138
Epoch 2460800.5
nobs 2989
nopp 22
Years observed 1939-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.142
ep 0.130
sin(ip) 0.047
G 0.150
H 14.760
Mass
D 3.27 0.209
pV 0.261 0.0505
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 8.798
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.1415 0.1299 0.0468 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.27 0.209 0.209 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.261 0.0505 0.0505 Masiero 2011ApJ...741...68M 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
14.76 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.892 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.5744 0.5744 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT