(4641) Ayako Main-belt Asteroid
Discovered on 30 August 1990 by Endate, K., Watanabe, K. at Kitami.
Ayako Endate (b.~1971) is the wife of the first discoverer of this minor planet.Naming citation (20110218/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Ayako is today
Seen from above the solar system on 2026-10-14: Ayako is 1.86 au from the Sun and 1.27 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4641 |
| Provisional designation | 1990 QT3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.55 km (#13,833 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.424 |
| Rotation period | 5.31 hours |
| Absolute magnitude (H) | 14.08 |
| Orbital period | 3.24 years |
| Semi-major axis | 2.19 au |
| Perihelion – aphelion | 1.81 – 2.56 au |
| Eccentricity | 0.171 |
| Inclination | 1.65° |
| Closest distance between its orbit and Earth's (MOID) | 0.819 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 30 August 1990
More named asteroids discovered by Endate, K., Watanabe, K.
- (4042) Okhotsk
- (4126) Mashu
- (4460) Bihoro
- (4491) Otaru
- (4497) Taguchi
- (4508) Takatsuki
- (4547) Massachusetts
- (4585) Ainonai
- (4607) Seilandfarm
- (4712) Iwaizumi
- (4773) Hayakawa
- (4839) Daisetsuzan
← (4640) Hara · (4642) Murchie →