1998 JJ4
1998JJ4, 1987 SA12, 1987SA12, 44168, J87S12A, J98J04J
All data for this body: [vot]
MPC data
| Name (number) |
1998 JJ4 (44168) |
| a |
2.43461 |
| e |
0.32620 |
| i / sin(i) |
9.8542 /
0.17114
|
| q |
1.64043
|
| Q |
3.22878
|
| ω |
117.1288 |
| Node |
222.9808 |
| m |
330.2382 |
| n |
0.2595 |
| Epoch |
2460800.5 |
| nobs |
1573 |
| nopp |
22 |
| Years observed |
1987-2025 |
| rms |
0.74 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.435 |
|
| ep |
0.272 |
|
| sin(ip) |
0.197 |
|
| G |
0.150 |
|
| H |
15.200 |
|
| Mass |
|
|
| D |
2.60 |
0.400 |
| pV |
0.230 |
0.0700 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
None |
| Spectral Class Score |
|
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.4348 |
0.2715 |
0.1966 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 2.60 |
0.400 |
0.400 |
Ali-Lagoa |
2017A&A...603A..55A |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.230 |
0.0700 |
0.0700 |
Ali-Lagoa |
2017A&A...603A..55A |
NEATM |
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 |
| 15.20 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |