Fraction computes the illuminated fraction of the disk of a planet.

FractionVenus computes an approximation of the illumanted fraction of Venus.

Jupiter computes the visual magnitude of Jupiter.

Jupiter84 computes the visual magnitude of Jupiter.

Mars computes the visual magnitude of Mars.

Mars84 computes the visual magnitude of Mars.

Mercury computes the visual magnitude of Mercury.

Mercury84 computes the visual magnitude of Mercury.

Neptune computes the visual magnitude of Neptune.

Neptune84 computes the visual magnitude of Neptune.

PhaseAngle computes the phase angle of a planet.

PhaseAngle2 computes the phase angle of a planet.

PhaseAngle3 computes the phase angle of a planet.

Pluto84 computes the visual magnitude of Pluto.

Saturn computes the visual magnitude of Saturn.

Saturn84 computes the visual magnitude of Saturn.

Uranus computes the visual magnitude of Uranus.

Uranus84 computes the visual magnitude of Uranus.

Venus computes the visual magnitude of Venus.

Venus84 computes the visual magnitude of Venus.