| Discovery | |
|---|---|
| Discovered by: | Edward L. G. Bowell |
| Discovery date: | March 21, 1982 |
| Orbital characteristics | |
| Epoch June 14, 2006 (JD 2453900.5) | |
| Aphelion | 351.134 Gm (2.347 AU) |
| Perihelion: | 305.739 Gm (2.044 AU) |
| Semi-major axis: | 328.437 Gm (2.195 AU) |
| Eccentricity: | 0.069 |
| Orbital period: | 1188.195 d (3.25 a) |
| Avg. orbital speed: | 20.08 km/s |
| Mean anomaly: | 157.291° |
| Inclination: | 2.733° |
| Longitude of ascending node: | 241.289° |
| Argument of perihelion: | 308.010° |
| Physical characteristics | |
| Dimensions: | 20.2 km |
| Mass: | 8.6×1015? kg |
| Mean density: | 2.0? g/cm³ |
| Equatorial surface gravity: | 0.0056? m/s² |
| Escape velocity: | 0.0107? km/s |
| Rotation period: | ? d |
| Albedo: | 0.10? |
| Temperature: | ~188 K |
| Spectral type: | S |
| Absolute magnitude: | 13.3 |
2709 Sagan is a small main belt asteroid, which was discovered by Edward L. G. Bowell in 1982. It is named after the late astronomer Carl Sagan. Sagan is an S-type asteroid, meaning that it is bright in colour and metallic in composition.
| Minor planets (see full list) |
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| Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Neptune Trojans · Comets · Trans-Neptunians (Kuiper belt • Scattered disc objects • Oort cloud) |
| For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons, meteoroids and the Solar System. For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. |
