(20157) Andreaharrington Main-belt Asteroid
Discovered on 4 October 1996 by Spacewatch at Kitt Peak.
Andrea D. Harrington (b. 1984) is an American scientist and the NASA Antarctic Meteorite Curator. As the Mars Sample Return Curation Lead, she directed difficult and innovative work designing containment facilities and Mars sample-handling protocols, defining the critical infrastructure necessary to protect both returned samples and the Earth.Naming citation (WGSBN Bull. 6, #9, 13), IAU / Minor Planet Center, via NASA/JPL
Where Andreaharrington is today
Seen from above the solar system on 2026-10-14: Andreaharrington is 2.14 au from the Sun and 3.04 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20157 |
| Provisional designation | 1996 TS18 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.59 km (#16,076 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.199 |
| Absolute magnitude (H) | 15.67 |
| Orbital period | 3.60 years |
| Semi-major axis | 2.35 au |
| Perihelion – aphelion | 2.14 – 2.55 au |
| Eccentricity | 0.0881 |
| Inclination | 1.47° |
| Closest distance between its orbit and Earth's (MOID) | 1.15 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Andrea
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- (21891) Andreabocelli
- (22021) Andreariley
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- (26575) Andreapugh
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- (29657) Andreali
All asteroids named after someone called Andrea