(4771) Hayashi Main-belt Asteroid
Discovered on 7 September 1989 by Yanai, M., Watanabe, K. at Kitami.
Where Hayashi is today
Seen from above the solar system on 2026-10-14: Hayashi is 3.10 au from the Sun and 3.76 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4771 |
| Provisional designation | 1989 RM2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 13.5 km (#3,553 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0980 |
| Rotation period | 9.80 hours |
| Absolute magnitude (H) | 12.76 |
| Orbital period | 4.41 years |
| Semi-major axis | 2.69 au |
| Perihelion – aphelion | 2.27 – 3.11 au |
| Eccentricity | 0.155 |
| Inclination | 4.80° |
| Closest distance between its orbit and Earth's (MOID) | 1.26 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 7 September 1989
More named asteroids discovered by Yanai, M., Watanabe, K.
- (3867) Shiretoko
- (3915) Fukushima
- (4263) Abashiri
- (4557) Mika
- (5121) Numazawa
- (5174) Okugi
- (5374) Hokutosei
- (6562) Takoyaki
- (6707) Shigeru
- (7828) Noriyositosi
- (8182) Akita
- (10117) Tanikawa
← (4770) Lane · (4772) Frankdrake →