(27618) Ceilierin Main-belt Asteroid
Discovered on 22 May 2001 by LINEAR at Socorro.
Ceili Erin Masterson (b. 1998) is a finalist in the 2012 Broadcom MASTERS, a math and science competition for middle-school students, for her animal and plant sciences project. She attends the Stone Middle School, Melbourne, Florida.Naming citation (20121029/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Ceilierin is today
Seen from above the solar system on 2026-10-14: Ceilierin is 2.50 au from the Sun and 1.67 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 27618 |
| Provisional designation | 2001 KL55 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.67 km (#15,915 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.142 |
| Rotation period | 6.40 hours |
| Absolute magnitude (H) | 15.79 |
| Orbital period | 3.42 years |
| Semi-major axis | 2.27 au |
| Perihelion – aphelion | 1.92 – 2.62 au |
| Eccentricity | 0.155 |
| Inclination | 6.52° |
| Closest distance between its orbit and Earth's (MOID) | 0.905 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.