1999 XJ21
1999XJ21, 1990 TG6, 1990TG6, 25463, J90T06G, J99X21J
All data for this body: [vot]
MPC data
| Name (number) |
1999 XJ21 (25463) |
| a |
2.60073 |
| e |
0.16370 |
| i / sin(i) |
11.1505 /
0.19339
|
| q |
2.17500
|
| Q |
3.02647
|
| ω |
289.4712 |
| Node |
203.9740 |
| m |
322.8746 |
| n |
0.2350 |
| Epoch |
2460800.5 |
| nobs |
2410 |
| nopp |
21 |
| Years observed |
1990-2025 |
| rms |
0.73 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.599 |
|
| ep |
0.193 |
|
| sin(ip) |
0.206 |
|
| G |
0.150 |
|
| H |
14.680 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
L |
| Spectral Class Score |
1.392 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.5990 |
0.1926 |
0.2064 |
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 |
| 14.68 |
|
|
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 |
| L |
|
0.232 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |