(11136) Shirleymarinus Main-belt Asteroid
Discovered on 8 December 1996 by Spacewatch at Kitt Peak.
Shirley Marinus (b. 1921) served during a third of a century as secretary in the Lunar and Planetary Laboratory for the Polariscope program, the Imaging Photopolarimeters on Pioneers 10 and 11, the Space Science Series textbooks, and the Spacewatch survey of comets and minor planets.Naming citation (20010705/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Shirleymarinus is today
Seen from above the solar system on 2026-10-14: Shirleymarinus is 2.57 au from the Sun and 2.96 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11136 |
| Provisional designation | 1996 XW12 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.81 km (#13,196 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.403 |
| Absolute magnitude (H) | 14.1 |
| Orbital period | 3.66 years |
| Semi-major axis | 2.37 au |
| Perihelion – aphelion | 2.02 – 2.73 au |
| Eccentricity | 0.151 |
| Inclination | 7.53° |
| Closest distance between its orbit and Earth's (MOID) | 1.03 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Shirley
All asteroids named after someone called Shirley