1999 XD261
1999XD261, 1999 YO28, 1999YO28, J99XQ1D, J99Y28O, M2156
All data for this body: [vot]
MPC data
| Name (number) |
1999 XD261 (222156) |
| a |
3.09486 |
| e |
0.10714 |
| i / sin(i) |
7.1675 /
0.12477
|
| q |
2.76327
|
| Q |
3.42646
|
| ω |
100.9857 |
| Node |
257.7572 |
| m |
308.1435 |
| n |
0.1810 |
| Epoch |
2460800.5 |
| nobs |
762 |
| nopp |
18 |
| Years observed |
1999-2025 |
| rms |
0.81 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
3.092 |
|
| ep |
0.077 |
|
| sin(ip) |
0.146 |
|
| G |
0.150 |
|
| H |
15.310 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
C |
| Spectral Class Score |
0.568 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 3.0921 |
0.0771 |
0.1461 |
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 |
| 15.31 |
|
|
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 |
| C |
C |
0.0946 |
0.0490 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |
| X |
C |
0.0333 |
0.0490 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |