|
|
 GeoAstro Applets |
 Astronomy |
 Chaos Game |
 Java |
 Miscel- laneous |
 Physics Quiz |
 Who is Who ? |
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 |
 |
| phase Angle (°) |
phi angle between the Sun and the observer as seen from the center of the planet |
 |
| 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. |
 |
Data computed by my Planet Applet
Visibility 2008 of the bright planets
Updated: 2008 Mar 10