(19156) Heco Main-belt Asteroid
Discovered on 20 September 1990 by T. Seki at Geisei.
Joseph Heco (Hikozo Hamada, 1837--1897) was born in Harima town, Hyogo prefecture. He survived a shipwreck in 1851, was taken to the US and became one of the first Japanese to become a US citizen. Returning to Japan, he published the first Japanese newspaper, while Japan was still closed to the outside world.Naming citation (20121228/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Heco is today
Seen from above the solar system on 2026-10-14: Heco is 2.70 au from the Sun and 1.94 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 19156 |
| Provisional designation | 1990 SE4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.80 km (#9,229 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.145 |
| Absolute magnitude (H) | 13.6 |
| Orbital period | 4.44 years |
| Semi-major axis | 2.70 au |
| Perihelion – aphelion | 2.68 – 2.72 au |
| Eccentricity | 0.00799 |
| Inclination | 1.25° |
| Closest distance between its orbit and Earth's (MOID) | 1.68 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Joseph
- (2157) Ashbrook
- (4225) Hobart
- (5034) Joeharrington
- (5577) Priestley
- (5883) Josephblack
- (6540) Stepling
- (6743) Liu
- (7656) Joemontani
- (8023) Josephwalker
- (8255) Masiero
- (8661) Ratzinger
- (8794) Joepatterson
All asteroids named after someone called Joseph