(21615) Guardamano Main-belt Asteroid
Discovered on 10 May 1999 by LINEAR at Socorro.
Andrew Lacson Guardamano (b. 1986) was awarded second place in the 2005 Intel International Science and Engineering Fair for his medicine and health team project. He attends the Archbishop MacDonald High School, Edmonton, Alberta, Canada.Naming citation (20050822/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Guardamano is today
Seen from above the solar system on 2026-10-14: Guardamano is 2.18 au from the Sun and 3.16 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21615 |
| Provisional designation | 1999 JQ76 |
| Orbit class | Main-belt Asteroid |
| Diameter | 1.78 km (#17,228 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.265 |
| Rotation period | 2.96 hours |
| Absolute magnitude (H) | 15.52 |
| Orbital period | 3.46 years |
| Semi-major axis | 2.29 au |
| Perihelion – aphelion | 2.13 – 2.45 au |
| Eccentricity | 0.0705 |
| Inclination | 6.13° |
| 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 Andrew
- (5280) Andrewbecker
- (5441) Andymurray
- (6814) Steffl
- (6825) Irvine
- (6947) Andrewdavis
- (7150) McKellar
- (8257) Andycheng
- (8867) Tubbiolo
- (9999) Wiles
- (10230) Andrewnorton
- (11450) Shearer
- (12506) Pariser
All asteroids named after someone called Andrew
Also discovered on 10 May 1999
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- (11225) Borden
- (11227) Ksenborisova
- (11228) Botnick
- (11229) Brookebowers
- (11230) Deschaffer
- (11231) Schiavo
- (11413) Catanach
- (11414) Allanchu
- (12117) Meagmessina
- (16048) Eddiedai
- (16049) D'Amore