|
Discovery and designation
|
|
|---|---|
| Discovered by | T. Okuni |
| Discovery site | Nanyo |
| Discovery date | August 8, 1999 |
|
Designations
|
|
| MPC designation | 18840 |
| Alternate name(s) | 1999 PT4 |
| Epoch May 14, 2008 | |
| Ap | 2.4139584 |
| Peri | 2.3641178 |
| Eccentricity | 0.0104311 |
| Orbital period | 1348.7548969 |
| Mean anomaly | 357.46114 |
| Inclination | 2.63377 |
| Longitude of ascending node | 263.79292 |
| Argument of peri | 215.66434 |
| Absolute magnitude (H) | 14.0 |
18840 Yoshioba (1999 PT4) is a main-belt asteroid discovered on August 8, 1999 by T. Okuni at Nanyo.