(10257) Garecynthia Outer Main-belt Asteroid
Discovered on 16 October 1977 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
This minor planet honors the marriage of Gareth Williams, associate director of the Minor Planet Center, and Cynthia Marsden, daughter of the director, in Lexington, Massachusetts, on 2002 Oct. 1.Naming citation (20030318/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Garecynthia is today
Seen from above the solar system on 2026-10-14: Garecynthia is 3.59 au from the Sun and 4.48 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10257 |
| Provisional designation | 4333 T-3 |
| Orbit class | Outer Main-belt Asteroid |
| Absolute magnitude (H) | 13.12 |
| Orbital period | 6.44 years |
| Semi-major axis | 3.46 au |
| Perihelion – aphelion | 3.20 – 3.72 au |
| Eccentricity | 0.0754 |
| Inclination | 4.97° |
| Closest distance between its orbit and Earth's (MOID) | 2.19 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Gareth
All asteroids named after someone called Gareth
Also discovered on 16 October 1977
- (3798) de Jager
- (3936) Elst
- (4044) Erikhog
- (4108) Rakos
- (4722) Agelaos
- (4753) Phidias
- (4754) Panthoos
- (5610) Balster
- (5699) Munch
- (5700) Homerus
- (5984) Lysippus
- (6055) Brunelleschi