(20038) Arasaki Outer Main-belt Asteroid
Discovered on 26 October 1992 by Endate, K., Watanabe, K. at Kitami.
Yoshikuni Arasaki (b. 1953) has been chief of the Okinawa Prefecture Ishigaki Youth House since 2017. He is a well-known amateur astronomer and popularizer of astronomy in Ishigaki Island. He enjoys observing and photographing comets, nebulae and star clusters through his telescope.Naming citation (MPC batch dated 2018-01-31), IAU / Minor Planet Center, via NASA/JPL
Where Arasaki is today
Seen from above the solar system on 2026-10-14: Arasaki is 4.10 au from the Sun and 4.98 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20038 |
| Provisional designation | 1992 UN5 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 24.0 km (#1,777 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0770 |
| Rotation period | 6.94 hours |
| Absolute magnitude (H) | 11.72 |
| Orbital period | 7.97 years |
| Semi-major axis | 3.99 au |
| Perihelion – aphelion | 3.02 – 4.96 au |
| Eccentricity | 0.243 |
| Inclination | 19.5° |
| Closest distance between its orbit and Earth's (MOID) | 2.03 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Yoshikuni
All asteroids named after someone called Yoshikuni
Also discovered on 26 October 1992
- (5855) Yukitsuna
- (6022) Jyuro
- (6023) Tsuyashima
- (6337) Shiota
- (6338) Isaosato
- (6460) Bassano
- (6498) Ko
- (7590) Aterui
- (8036) Maehara
- (8294) Takayuki
- (8295) Toshifukushima
- (8874) Showashinzan
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
- (4641) Ayako
- (4712) Iwaizumi
- (4773) Hayakawa
← (20037) Duke · (20039) Danfalk →