(49500) Ishitoshi Main-belt Asteroid
Discovered on 14 February 1999 by T. Kobayashi at Oizumi.
Toshihiro Ishikawa (b. 1975) is a Japanese amateur astronomer and a key member of the Ota Astronomical Club. At his home observatory, he observes and photographs celestial bodies.Naming citation (MPC batch dated 2015-01-05), IAU / Minor Planet Center, via NASA/JPL
Where Ishitoshi is today
Seen from above the solar system on 2026-10-14: Ishitoshi is 2.56 au from the Sun and 3.44 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 49500 |
| Provisional designation | 1999 CP9 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.97 km (#6,612 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0700 |
| Absolute magnitude (H) | 14.15 |
| Orbital period | 5.51 years |
| Semi-major axis | 3.12 au |
| Perihelion – aphelion | 2.19 – 4.05 au |
| Eccentricity | 0.299 |
| Inclination | 14.2° |
| Closest distance between its orbit and Earth's (MOID) | 1.25 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Toshihiro
All asteroids named after someone called Toshihiro
Also discovered on 14 February 1999
- (20433) Prestinenza
- (27217) Mattieharrington
- (28331) Dianeberard
- (31450) Stevepreston
- (31453) Arnaudthiry
- (42795) Derekmuller
- (59248) Genevievesoucail