(4154) Rumsey Main-belt Asteroid
Discovered on 10 July 1985 by Gilmore, A. C., Kilmartin, P. M. at Lake Tekapo.
Norman J. Rumsey (b. 1924) is New Zealand's foremost optical designer. With Garry Nankivell he has developed numerous optical systems for professional and amateur astronomers throughout the country. Rumsey's three-mirror designs were of particular interest.Naming citation (20000523/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Rumsey is today
Seen from above the solar system on 2026-10-14: Rumsey is 2.73 au from the Sun and 1.78 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4154 |
| Provisional designation | 1985 NE |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.21 km (#8,621 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.289 |
| Rotation period | 3.26 hours |
| Absolute magnitude (H) | 13.29 |
| Orbital period | 4.04 years |
| Semi-major axis | 2.54 au |
| Perihelion – aphelion | 2.02 – 3.05 au |
| Eccentricity | 0.203 |
| Inclination | 6.73° |
| Closest distance between its orbit and Earth's (MOID) | 1.02 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Norman
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- (10189) Normanrockwell
- (13085) Borlaug
- (17826) Normanwisdom
- (29133) Vargas
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All asteroids named after someone called Norman