1998 HW18
1998HW18, A0839, J98H18W
All data for this body: [vot]
MPC data
| Name (number) |
1998 HW18 (100839) |
| a |
2.27588 |
| e |
0.18355 |
| i / sin(i) |
5.4125 /
0.09433
|
| q |
1.85813
|
| Q |
2.69362
|
| ω |
309.8379 |
| Node |
207.3062 |
| m |
345.6653 |
| n |
0.2871 |
| Epoch |
2460800.5 |
| nobs |
800 |
| nopp |
17 |
| Years observed |
1998-2025 |
| rms |
0.79 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.279 |
|
| ep |
0.236 |
|
| sin(ip) |
0.102 |
|
| G |
0.150 |
|
| H |
16.760 |
|
| 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 |
| 2.2789 |
0.2360 |
0.1024 |
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 |
| 16.76 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |