1999 XK21

1999XK21, 41232, J99X21K

All data for this body: [vot]

MPC data
Name (number) 1999 XK21 (41232)
a 2.63842
e 0.15880
i / sin(i) 11.6959 / 0.20272
q 2.21945
Q 3.05739
ω 115.2004
Node 202.6145
m 53.5335
n 0.2300
Epoch 2460800.5
nobs 1722
nopp 22
Years observed 1990-2025
rms 0.77
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.639
ep 0.121
sin(ip) 0.216
G 0.150
H 15.050
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 5.462
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6391 0.1215 0.2157 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
15.05 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 S 0.9103 0.9103 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT