(22277) Hirado Main-belt Asteroid
Discovered on 14 November 1982 by Kosai, H., Hurukawa, K. at Kiso.
Hirado is a town in Nagaskai Prefecture, Japan. The Portugese arrived in 1550, and during the early Edo period (beginning in 1603) Hirado became a center of trade with Portugal, the Netherlands and England.Naming citation (MPC batch dated 2017-11-04), IAU / Minor Planet Center, via NASA/JPL
Where Hirado is today
Seen from above the solar system on 2026-10-14: Hirado is 2.98 au from the Sun and 3.97 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 22277 |
| Provisional designation | 1982 VK4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.09 km (#12,527 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.384 |
| Rotation period | 92.0 hours |
| Absolute magnitude (H) | 14.27 |
| Orbital period | 4.19 years |
| Semi-major axis | 2.60 au |
| Perihelion – aphelion | 2.15 – 3.05 au |
| Eccentricity | 0.172 |
| Inclination | 13.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.19 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 14 November 1982
- (3291) Dunlap
- (3320) Namba
- (3878) Jyoumon
- (4855) Tenpyou
- (4890) Shikanosima
- (7634) Shizutani-Kou
- (8144) Hiragagennai
- (11827) Wasyuzan
- (12221) Ogatakoan
- (12682) Kawada
- (14338) Shibakoukan
- (14820) Aizuyaichi