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Planets 2008: Details

phase, phase angle, elongation, magnitude, illuminated fraction

Details for Mercury

Details for Venus

Details for Mars

Details for Jupiter

Details for Saturn

Details for Uranus


phase
relative excess ∆L of heliocentric longitude of the planet over the heliocentric longitude of the Earth: ∆L/360°
0=New, 0.25=First Quarter
0.5=Full, 0.75=Last Quarter
planet phase
phase Angle
(°)

phi
angle between the Sun and the observer as seen from the center of the planet
planet phase angle
illuminated fraction of the disc
(%)
0.5*(1+cos(phi))


elongation
(°)
angular separation of the ecliptical longitudes of the planet and the Sun, as seen from the center of the Earth.
planet elongation from Sun


Data computed by my Planet Applet

Visibility 2008 of the bright planets


Updated: 2008 Mar 10