(25589) Danicamckellar Main-belt Asteroid
Discovered on 9 December 1999 by CSS at Catalina.
Danica McKellar (b. 1975) is an American actress, mathematician, and author. Widely known for her acting, McKellar has also published research works in mathematics in addition to several popular books on math. She has been a strong advocate for math education, particularly encouraging young girls and woman to pursue math.Naming citation (WGSBN Bull. 2, #7, 8), IAU / Minor Planet Center, via NASA/JPL
Where Danicamckellar is today
Seen from above the solar system on 2026-10-14: Danicamckellar is 2.53 au from the Sun and 3.35 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 25589 |
| Provisional designation | 1999 XY231 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.83 km (#10,948 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.251 |
| Rotation period | 5.38 hours |
| Absolute magnitude (H) | 13.89 |
| Orbital period | 4.19 years |
| Semi-major axis | 2.60 au |
| Perihelion – aphelion | 2.14 – 3.06 au |
| Eccentricity | 0.178 |
| Inclination | 14.6° |
| Closest distance between its orbit and Earth's (MOID) | 1.17 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 9 December 1999
- (15523) Grenville
- (16135) Ivarsson
- (16150) Clinch
- (19731) Tochigi
- (20730) Jorgecarvano
- (20731) Mothediniz
- (22032) Mikekoop