(20357) Shireendhir Main-belt Asteroid
Discovered on 23 April 1998 by LINEAR at Socorro.
Shireen Dhir (b. 1991) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her botany and zoology project. She attends the Feagin Mill Middle School, Warner Robins, Georgia.Naming citation (20041028/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Shireendhir is today
Seen from above the solar system on 2026-10-14: Shireendhir is 2.69 au from the Sun and 2.53 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20357 |
| Provisional designation | 1998 HP147 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.79 km (#9,235 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0910 |
| Rotation period | 10.2 hours |
| Absolute magnitude (H) | 14.75 |
| Orbital period | 4.57 years |
| Semi-major axis | 2.75 au |
| Perihelion – aphelion | 2.69 – 2.82 au |
| Eccentricity | 0.0223 |
| Inclination | 7.50° |
| Closest distance between its orbit and Earth's (MOID) | 1.68 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 23 April 1998
- (9465) Fergusonsam
- (11367) Rachelseevers
- (11723) Briankennedy
- (12097) Peterlowen
- (12099) Meigooni
- (12525) Kathleenloia
- (19484) Vanessaspini
- (19487) Rosscoleman
- (19488) Abramcoley
- (20345) Davidvito
- (20346) Firre
- (20347) Wunderlich