(9898) Yoshiro Main-belt Asteroid
Discovered on 18 February 1996 by T. Kobayashi at Oizumi.
Yoshiro Yamada (b. 1954) is a leading popularizer of astronomy in Japan. He worked at the National Astronomical Observatory as a public outreach official, and also at museums in Sagamihara, Yokohama and Tokyo. He translated Don Yeomans' book on near-Earth objects into Japanese.Naming citation (WGSBN Bull. 5, #28, 7), IAU / Minor Planet Center, via NASA/JPL
Where Yoshiro is today
Seen from above the solar system on 2026-10-14: Yoshiro is 2.43 au from the Sun and 2.57 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9898 |
| Provisional designation | 1996 DF |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.26 km (#10,129 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.533 |
| Rotation period | 6.53 hours |
| Absolute magnitude (H) | 13.75 |
| Orbital period | 3.65 years |
| Semi-major axis | 2.37 au |
| Perihelion – aphelion | 2.21 – 2.53 au |
| Eccentricity | 0.0681 |
| Inclination | 5.92° |
| Closest distance between its orbit and Earth's (MOID) | 1.23 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 18 February 1996
More named asteroids discovered by T. Kobayashi
- (4807) Noboru
- (5924) Teruo
- (6275) Kiryu
- (6276) Kurohone
- (6346) Syukumeguri
- (6414) Mizunuma
- (6418) Hanamigahara
- (6420) Riheijyaya
- (6422) Akagi
- (6423) Harunasan
- (6462) Myougi
- (6531) Subashiri
← (9897) Malerba · (9899) Greaves →