(21575) Padmanabhan Main-belt Asteroid
Discovered on 14 September 1998 by LINEAR at Socorro.
Hamsa Padmanabhan (b. 1989) was awarded second place in the 2006 Intel International Science and Engineering Fair for her physics project. She attends the Kendriya Vidyalaya Ganeshkhind, Pune, Maharashtra, India.Naming citation (20060711/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Padmanabhan is today
Seen from above the solar system on 2026-10-14: Padmanabhan is 2.98 au from the Sun and 2.41 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21575 |
| Provisional designation | 1998 RB80 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.00 km (#10,624 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.265 |
| Absolute magnitude (H) | 13.58 |
| Orbital period | 4.53 years |
| Semi-major axis | 2.74 au |
| Perihelion – aphelion | 2.46 – 3.02 au |
| Eccentricity | 0.103 |
| Inclination | 6.09° |
| Closest distance between its orbit and Earth's (MOID) | 1.45 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Hamsa
All asteroids named after someone called Hamsa
Also discovered on 14 September 1998
- (9810) Elanfiller
- (11190) Jennibell
- (12898) Mignard
- (12900) Rishabjain
- (12903) Isabellekatz
- (12906) Alexismacavoy
- (12907) Giannanilvo
- (13301) Hofsteen
- (13302) Kezmoh
- (13303) Asmitakumar
- (13305) Danielang
- (13307) Taralarsen