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SPICE kernels that exist independent of any particular flight project are called
generic Kernels. These may be obtained from the
generic kernels area of the NAIF server.
Included under this category are:
- Ephemerides for planets, satellites, and some comets and asteroids (SPK)
- Planetary constants kernels, including special binary versions for the earth and the moon (PCK)
- Special frames kernels associated with the moon (FK)
- Current leapseconds kernel (LSK)
- Topocentric locations (SPK) and reference frame definitions (FK) for some earth stations
- Star catalogs (PPM, Tycho2 and Hipparcos, in SPICE Type 1 format)
A wide assortment of source data are used in producing these generic kernels. Be sure to
understand the provenance of any generic kernel you may consider using.
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