20639 Michellouie
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| Discovery A | |
|---|---|
| Discoverer | LINEAR |
| Discovery date | October 4, 1999 |
| Alternate designations B |
1992 AO6; 1999 TD109 |
| Category | Main belt |
| Orbital elements C | |
|
|
|
| Eccentricity (e) | 0.099 |
| Semi-major axis (a) | 397.029 Gm (2.654 AU) |
| Perihelion (q) | 357.598 Gm (2.390 AU) |
| Aphelion (Q) | 436.460 Gm (2.918 AU) |
| Orbital period (P) | 1579.223 d (4.32 a) |
| Mean orbital speed | 18.24 km/s |
| Inclination (i) | 9.709° |
| Longitude of the ascending node (Ω) |
299.541° |
| Argument of perihelion (ω) |
168.315° |
| Mean anomaly (M) | 49.287° |
| Physical characteristics D | |
| Dimensions | ? km |
| Mass | ?×10? kg |
| Density | ? g/cm³ |
| Surface gravity | ? m/s² |
| Escape velocity | ? km/s |
| Rotation period | ? d |
| Spectral class | ? |
| Absolute magnitude | 14.1 |
| Albedo (geometric) | 0.1? |
| Mean surface temperature |
~171 K |
(20639) Michellouie is an asteroid discovered on 4 October 1999 by MIT Lincoln Laboratory's Near-Earth Asteroid Research (LINEAR) program.
It was named for Michelle Louie (b. 1986) who was awarded second place in the 2004 Intel International Science and Engineering Fair for her botany project. She attends the Kings Park High School, Kings Park, New York, U.S.A.
[edit] External links
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