649 Josefa is a minor planet orbiting the Sun. Photometric observations provide a rotation period of 10.481±0.001 h with a brightness variation of 0.33±0.04 in magnitude.[2]
| Discovery | |
|---|---|
| Discovered by | August Kopff |
| Discovery site | Heidelberg |
| Discovery date | 11 September 1907 |
| Designations | |
MPC designation | (649) Josefa |
Alternative designations | 1907 AF |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 108.60 yr (39665 d) |
| Aphelion | 3.2555 AU (487.02 Gm) |
| Perihelion | 1.8371 AU (274.83 Gm) |
Semi-major axis | 2.5463 AU (380.92 Gm) |
| Eccentricity | 0.27852 |
Orbital period (sidereal) | 4.06 yr (1484.1 d) |
Mean anomaly | 273.84° |
Mean motion | 0° 14m 33.252s / day |
| Inclination | 12.715° |
Longitude of ascending node | 357.035° |
Argument of perihelion | 349.562° |
| Physical characteristics | |
Synodic rotation period | 10.481 h (0.4367 d) |
Absolute magnitude (H) | 12.7 |
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