(15860) Siran Main-belt Asteroid
Discovered on 20 April 1996 by Galad, A., Kalmancok, D. at Modra.
Slovak geophysicist Gustáv Siráň (1934-2000) was a professor at Comenius University, Bratislava. From 1981 to 1989 he was head of the department of astronomy, geophysics and meteorology, and during this time the Astronomical and Geophysical Observatory in Modra was built.Naming citation (20010309/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Siran is today
Seen from above the solar system on 2026-10-14: Siran is 2.42 au from the Sun and 2.17 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 15860 |
| Provisional designation | 1996 HO |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.43 km (#16,408 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.396 |
| Rotation period | 10.5 hours |
| Absolute magnitude (H) | 14.84 |
| Orbital period | 3.66 years |
| Semi-major axis | 2.38 au |
| Perihelion – aphelion | 2.15 – 2.60 au |
| Eccentricity | 0.0948 |
| Inclination | 7.90° |
| Closest distance between its orbit and Earth's (MOID) | 1.18 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Gustav
- (6516) Gruss
- (9903) Leonhardt
- (10122) Froding
- (10358) Kirchhoff
- (11019) Hansrott
- (11041) Fechner
- (12637) Gustavleonhardt
- (14980) Gustavbrom
- (16445) Klimt
- (18872) Tammann
- (24967) Fristensky
- (38976) Taeve
All asteroids named after someone called Gustav
Also discovered on 20 April 1996
- (7099) Feuerbach
- (7903) Albinoni
- (10186) Albeniz
- (11333) Forman
- (11335) Santiago
- (13647) Rey
- (31032) Scheidemann
- (31037) Mydon