2001 KA21

2001KA21, 51699, K01K21A

All data for this body: [vot]

MPC data
Name (number) 2001 KA21 (51699)
a 2.77267
e 0.15951
i / sin(i) 8.4923 / 0.14768
q 2.33039
Q 3.21494
ω 196.1090
Node 90.1840
m 26.7884
n 0.2135
Epoch 2460800.5
nobs 1251
nopp 22
Years observed 1993-2025
rms 0.77
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.773
ep 0.159
sin(ip) 0.125
G 0.150
H 14.950
Mass
D 3.23 0.347
pV 0.269 0.0307
Value
Rotational Period 8.759
Period quality 2
Spectral Class S
Spectral Class Score 4.594
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7729 0.1594 0.1247 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.23 0.391 0.391 Masiero 2011ApJ...741...68M NEATM
3.24 0.754 0.754 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.267 0.1706 0.1706 Masiero 2011ApJ...741...68M NEATM
0.269 0.0312 0.0312 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
14.95 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
8.7595 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D S 0.2196 0.3000 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
DL 0.08 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.3825 0.3000 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.3831 0.3000 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT