(31500) Grutzik Main-belt Asteroid
Discovered on 12 February 1999 by LINEAR at Socorro.
Petra Luna Grutzik (b. 1996) was awarded second place in the 2014 Intel International Science and Engineering Fair for her behavioral and social sciences project. She attends the Redondo Union High School, Redondo Beach, California, U.S.A.Naming citation (MPC batch dated 2015-07-02), IAU / Minor Planet Center, via NASA/JPL
Where Grutzik is today
Seen from above the solar system on 2026-10-14: Grutzik is 2.58 au from the Sun and 2.87 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 31500 |
| Provisional designation | 1999 CK66 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.67 km (#15,926 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.327 |
| Absolute magnitude (H) | 15.02 |
| Orbital period | 3.49 years |
| Semi-major axis | 2.30 au |
| Perihelion – aphelion | 1.98 – 2.62 au |
| Eccentricity | 0.138 |
| Inclination | 3.87° |
| Closest distance between its orbit and Earth's (MOID) | 0.968 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 12 February 1999
- (10941) Mamidala
- (16017) Street
- (16019) Edwardsu
- (16020) Tevelde
- (16021) Caseyvaughn
- (17004) Sinkevich
- (17008) Anamariaperez
- (17009) Jasonping
- (17015) Shriyareddy
- (17883) Scobuchanan
- (17884) Jeffthompson
- (17885) Brianbeyt