(13633) Ivens Main-belt Asteroid
Discovered on 17 November 1995 by Spacewatch at Kitt Peak.
John Ivens (b. 1964) is a computer programmer working at the University of Arizona's Lunar and Planetary Laboratory. He spent many a night and day writing software to support infrared observations in the Saturn system during the Cassini mission.Naming citation (WGSBN Bull. 2, #16, 4), IAU / Minor Planet Center, via NASA/JPL
Where Ivens is today
Seen from above the solar system on 2026-10-14: Ivens is 2.13 au from the Sun and 1.85 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 13633 |
| Provisional designation | 1995 WW17 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.56 |
| Orbital period | 3.17 years |
| Semi-major axis | 2.16 au |
| Perihelion – aphelion | 1.99 – 2.33 au |
| Eccentricity | 0.0802 |
| Inclination | 4.12° |
| Closest distance between its orbit and Earth's (MOID) | 0.976 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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