(48590) Asaiayumi Main-belt Asteroid
Discovered on 2 October 1994 by Endate, K., Watanabe, K. at Kitami.
Ayumi Asai (b. 1976) is a Japanese astrophysicist and associate professor of solar physics at Kyoto University. Using the university’s solar telescope, she has conducted research aimed at the physical elucidation of solar activity and its application to space-weather forecasting, and has also contributed to the public outreach of astronomy in Kyoto.Naming citation (WGSBN Bull. 6, #12, 8), IAU / Minor Planet Center, via NASA/JPL
Where Asaiayumi is today
Seen from above the solar system on 2026-10-14: Asaiayumi is 2.66 au from the Sun and 3.65 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 48590 |
| Provisional designation | 1994 TY2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.5 km (#4,801 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0330 |
| Rotation period | 39.1 hours |
| Absolute magnitude (H) | 14.46 |
| Orbital period | 3.83 years |
| Semi-major axis | 2.45 au |
| Perihelion – aphelion | 1.79 – 3.10 au |
| Eccentricity | 0.269 |
| Inclination | 10.8° |
| Closest distance between its orbit and Earth's (MOID) | 0.835 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Ayumi
All asteroids named after someone called Ayumi
Also discovered on 2 October 1994
- (6878) Isamu
- (6927) Tonegawa
- (7664) Namahage
- (7890) Yasuofukui
- (8712) Suzuko
- (9080) Takayanagi
- (9208) Takanotoshi
- (12383) Eboshi
- (13608) Andosatoru
- (14027) Ichimoto
- (14487) Sakaisakae
- (14922) Ohyama