(483637) Johanstein Main-belt Asteroid
Discovered on 12 October 2004 by J. ZdanaviÄius K. Äernis at Moletai.
Johan Stein SJ (1888–1952) was a Dutch astronomer, a student of H. A. Lorentz, noted for his work on variable stars. He served as director of the Vatican Observatory from 1930 until his death. During the war he opened the observatory to 12,000 refugees. Queen Juliana made him a Knight of the Lion of Holland, and a lunar crater is named for him.Naming citation (WGSBN Bull. 3, #5, 16), IAU / Minor Planet Center, via NASA/JPL
Where Johanstein is today
Seen from above the solar system on 2026-10-14: Johanstein is 2.93 au from the Sun and 2.11 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 483637 |
| Provisional designation | 2004 TM347 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.97 |
| Orbital period | 5.43 years |
| Semi-major axis | 3.09 au |
| Perihelion – aphelion | 2.91 – 3.27 au |
| Eccentricity | 0.0583 |
| Inclination | 9.11° |
| Closest distance between its orbit and Earth's (MOID) | 1.92 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Johan
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- (5494) Johanmohr
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- (11846) Verminnen
- (12857) Johandemessie
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- (24503) Kero
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- (79410) Wallerius
All asteroids named after someone called Johan
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