1999 XP218
1999XP218, J99XL8P, P7721
All data for this body: [vot]
MPC data
| Name (number) |
1999 XP218 (257721) |
| a |
2.39016 |
| e |
0.18275 |
| i / sin(i) |
9.2119 /
0.16009
|
| q |
1.95336
|
| Q |
2.82695
|
| ω |
346.2564 |
| Node |
97.0692 |
| m |
325.6651 |
| n |
0.2667 |
| Epoch |
2460800.5 |
| nobs |
477 |
| nopp |
13 |
| Years observed |
1999-2024 |
| rms |
0.90 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.390 |
|
| ep |
0.198 |
|
| sin(ip) |
0.141 |
|
| G |
0.150 |
|
| H |
16.920 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
None |
| Spectral Class Score |
|
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.3900 |
0.1979 |
0.1405 |
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 |
| 16.92 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |