(18782) Joanrho Main-belt Asteroid
Discovered on 10 May 1999 by LINEAR at Socorro.
Joan Young Rho (b. 1985) was awarded third place in the 2003 Intel International Science and Engineering Fair for her engineering team project. She attends the Wheatley School, Old Westbury, New York, U.S.A.Naming citation (20040830/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Joanrho is today
Seen from above the solar system on 2026-10-14: Joanrho is 2.40 au from the Sun and 1.48 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18782 |
| Provisional designation | 1999 JJ46 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.12 km (#16,899 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.227 |
| Absolute magnitude (H) | 15.56 |
| Orbital period | 3.71 years |
| Semi-major axis | 2.40 au |
| Perihelion – aphelion | 2.08 – 2.72 au |
| Eccentricity | 0.134 |
| Inclination | 3.85° |
| Closest distance between its orbit and Earth's (MOID) | 1.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Joan
- (4329) Miro
- (25472) Joanoro
- (28689) Rohrback
- (36039) Joandunham
- (103739) Higginbotham
- (166974) Joanbinimelis
- (170193) Joanguillem
- (257084) Joanalcover
- (306001) Joanllaneras
All asteroids named after someone called Joan
Also discovered on 10 May 1999
- (11219) Benbohn
- (11225) Borden
- (11227) Ksenborisova
- (11228) Botnick
- (11229) Brookebowers
- (11230) Deschaffer
- (11231) Schiavo
- (11413) Catanach
- (11414) Allanchu
- (12117) Meagmessina
- (16048) Eddiedai
- (16049) D'Amore