1998OB4
1994JD6, 1997EN50, 20400, J94J06D, J97E50N, J98O04B
All data for this body: [vot]
MPC data
| Name (number) |
1998OB4 (20400) |
| Packed designation |
20400 |
| a |
2.21930 |
| e |
0.08994 |
| i / sin(i) |
2.5110 /
0.04381
|
| q |
2.01971
|
| Q |
2.41890
|
| ω |
243.0323 |
| Node |
202.7161 |
| m |
272.3959 |
| n |
0.2981 |
| Epoch |
2459600.5 |
| nobs |
1054 |
| nopp |
20 |
| Years observed |
1949-2021 |
| rms |
0.70 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.219 |
|
| ep |
0.122 |
|
| sin(ip) |
0.053 |
|
|
Value |
Standard error |
| G |
0.150 |
|
| H |
16.020 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.2185 |
0.1218 |
0.0532 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Jan-2022 |
G data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.15 |
|
|
MPC-2022-01-18 |
MPC-2022-01-18 |
Phot |
H data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 16.02 |
|
|
MPC-2022-01-18 |
MPC-2022-01-18 |
Phot |