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Table 1
Orbital and rotation parameters of 67P for the orbital solution.
| Parameters | Symbols | Values | Sources |
|---|---|---|---|
| Semimajor axis | a | 3.46 au | JPL Small-Body Database (a) |
| Eccentricity | e | 0.641 | |
| Inclination | i | 7.04° | |
| Longitude of ascending node | Ω | 50.2° | |
| Longitude of perihelion | ϖ | 62.9° | |
| Mean anomaly on Julian date 2456981.5 | M | 319.5° | |
| Orientation of rotation axis (b) | RA | 69.5° | Preusker et al. (2015) |
| Dec | 64.1° | ||
| Rotation period | tP | 12.4 h | |
Notes. (a) Online at https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=67P (retrieved in September 2018). (b) RA stands for Right Ascension and Dec for Declination.
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