(19155) Lifeson Main-belt Asteroid
Discovered on 22 September 1990 by B. Roman at Palomar.
Alex Lifeson (Alexander Zivojinovich, b. 1953) is the guitarist for the Canadian band Rush. Cofounder of the band, he is an integral part of the Rush sound. Along with his band mates, Alex is an Officer of the Order of Canada.Naming citation (20070730/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Lifeson is today
Seen from above the solar system on 2026-10-14: Lifeson is 2.94 au from the Sun and 3.81 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 19155 |
| Provisional designation | 1990 SX3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.91 km (#9,062 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.291 |
| Rotation period | 5.08 hours |
| Absolute magnitude (H) | 13.42 |
| Orbital period | 4.16 years |
| Semi-major axis | 2.59 au |
| Perihelion – aphelion | 2.03 – 3.14 au |
| Eccentricity | 0.216 |
| Inclination | 12.3° |
| Closest distance between its orbit and Earth's (MOID) | 1.05 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Alex
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All asteroids named after someone called Alex
Also discovered on 22 September 1990
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- (9949) Brontosaurus
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