Global Information2709 Sagan information
 Lightcurve-based 3D-model of Sagan | |
| Discovery [1] | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 21 March 1982 |
| Designations | |
MPC designation | (2709) Sagan |
Named after | Carl Sagan (astronomer and science communicator) [2] |
Alternative designations | 1982 FH · 1951 WF1 1959 CC · 1959 EA1 1964 WT · 1982 FE2 |
Minor planet category | main-belt · Flora [3] |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 58.15 yr (21,239 days) |
| Aphelion | 2.3475 AU |
| Perihelion | 2.0428 AU |
Semi-major axis | 2.1952 AU |
| Eccentricity | 0.0694 |
Orbital period (sidereal) | 3.25 yr (1,188 days) |
Mean anomaly | 319.11° |
Mean motion | 0° 18m 10.8s / day |
| Inclination | 2.7318° |
Longitude of ascending node | 241.13° |
Argument of perihelion | 308.48° |
| Physical characteristics | |
| Dimensions | 6.559±0.196 km[4] 6.81 km (calculated)[3] |
Synodic rotation period | 5.254±0.001 h[5] 5.2557±0.0002 h[a] 5.2564±0.0007 h[b] 5.258±0.002 h[6] |
Geometric albedo | 0.24 (assumed)[3] 0.259±0.043[4] |
Spectral type | SMASS = S [1] · S [3] |
Absolute magnitude (H) | 12.13±1.03[7] · 13.0[1][3][4] |
2709 Sagan, provisional designation 1982 FH, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 6.7 kilometers in diameter. It was discovered on 21 March 1982, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona, and named after astronomer and science popularizer Carl Sagan.[2][8]
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