(20354) Rebeccachan Main-belt Asteroid
Discovered on 21 April 1998 by LINEAR at Socorro.
Rebecca Ann Chan (b. 1991) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her environmental sciences project. She attends the Rhoades School, Encinitas, California.Naming citation (20041028/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Rebeccachan is today
Seen from above the solar system on 2026-10-14: Rebeccachan is 2.12 au from the Sun and 3.02 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20354 |
| Provisional designation | 1998 HA139 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.93 km (#15,388 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.247 |
| Absolute magnitude (H) | 15.12 |
| Orbital period | 3.60 years |
| Semi-major axis | 2.35 au |
| Perihelion – aphelion | 2.10 – 2.59 au |
| Eccentricity | 0.104 |
| Inclination | 6.41° |
| Closest distance between its orbit and Earth's (MOID) | 1.12 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Rebecca
- (12120) Rebeccagrella
- (12206) Prats
- (15569) Feinberg
- (18004) Krystosek
- (22987) Rebeckaufman
- (23008) Rebeccajohns
- (23047) Isseroff
- (25322) Rebeccajean
- (28504) Rebeccafaye
- (28710) Rebeccab
- (34432) Groebe
- (34451) Rebohearn
All asteroids named after someone called Rebecca
Also discovered on 21 April 1998
- (9244) Visnjan
- (11715) Harperclark
- (11716) Amahartman
- (11718) Hayward
- (11719) Hicklen
- (11720) Horodyskyj
- (11721) Shawnlowe
- (11724) Ronaldhsu
- (11725) Victoriahsu
- (12091) Jesmalmquist
- (12092) Erinorourke
- (12093) Chrimatthews