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
|
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
| 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
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.15 |
|
|
MPC-2023-12-94 |
MPC-2023-12-94 |
Phot |
H data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 15.05 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Spectral Class Data
| 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 |