(40919) Johntonry Main-belt Asteroid
Discovered on 9 October 1999 by LINEAR at Socorro.
John Tonry (b. 1953), of the University of Hawaii, has worked at the cutting edge of science and technology in astronomy. He developed the orthogonal transfer CCD concept, and a new method for extragalactic distance determinations, and was on the team that made the Nobel Prize winning discovery of dark energy.Naming citation (MPC batch dated 2016-02-22), IAU / Minor Planet Center, via NASA/JPL
Where Johntonry is today
Seen from above the solar system on 2026-10-14: Johntonry is 2.45 au from the Sun and 3.45 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 40919 |
| Provisional designation | 1999 TF162 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.45 km (#16,350 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.268 |
| Absolute magnitude (H) | 15.25 |
| Orbital period | 4.08 years |
| Semi-major axis | 2.55 au |
| Perihelion – aphelion | 2.06 – 3.05 au |
| Eccentricity | 0.195 |
| Inclination | 4.58° |
| Closest distance between its orbit and Earth's (MOID) | 1.04 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called John
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All asteroids named after someone called John
Also discovered on 9 October 1999
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- (40917) Pauljorden
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