(19304) Yoshidaseiko Main-belt Asteroid
Discovered on 5 October 1996 by Endate, K., Watanabe, K. at Kitami.
Seiko Yoshida (b. 1952) is a Japanese researcher in the history of astronomy. She is a member of the History of Science Society of Japan and an associate member of the Astronomical Society of Japan. Yoshida continues to study Kiyotsugu Hirayama, the discoverer of asteroid families.Naming citation (WGSBN Bull. 4, #13, 18), IAU / Minor Planet Center, via NASA/JPL
Where Yoshidaseiko is today
Seen from above the solar system on 2026-10-14: Yoshidaseiko is 2.31 au from the Sun and 2.60 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 19304 |
| Provisional designation | 1996 TQ1 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.23 |
| Orbital period | 3.66 years |
| Semi-major axis | 2.37 au |
| Perihelion – aphelion | 1.87 – 2.88 au |
| Eccentricity | 0.213 |
| Inclination | 2.12° |
| Closest distance between its orbit and Earth's (MOID) | 0.870 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 5 October 1996
- (8725) Keiko
- (13185) Agasthenes
- (19303) Chinacyo
- (20150) Changshuhong
- (20151) Utsunomiya
- (20158) Allton
- (21284) Pandion
- (35283) Bradtimerson
- (79333) Yusaku