4428：Polaris of Pandora

Reference
[1] Pandora is the fifth moon of the gas giant Polyphemus (both are figures in Greek mythology), which orbits the closest star to the sun, Alpha 
Centauri A.
[2] The Na'vi (English: The People) are a race of sentient extraterrestrial humanoids who inhabit the lush jungle moon of Pandora.
[3] Ikran (English: Mountain banshees) are large, bird-like aerial predators that are native to Pandora. They are used by the Na'vi for hunting from the 
air and traveling larger distances.
[4] To define latitude and longitude of Pandora, we need to know equator of the planet. The equator is the intersection of Pandora's surface with the 
plane perpendicular to axis of Pandora and containing the planet's center. Latitude is a geographic coordinate that specifies the north-south position of a point on the 
Pandora's surface, it is the angle between the equator and the line connected point on the surface with the planet's center. Latitude is an angle which ranges from -π/2 
at the North pole to π/2 at the South pole. Longitude is a geographic coordinate that specifies the east-west position of a point on the Earth's surface. Points with the 
same longitude lie in lines running from the North Pole to the South Pole. The longitude of a point on the surface is measured as an angle east or west from the 
Hometree [5], ranging from 0 at the Hometree to π eastward and -π westward. Specifically, it is the angle between a plane 
containing the Hometree and a plane containing the North Pole, South Pole and the point on the surface.
[5] Hometrees (Na'vi name: Kelutral) are massive trees that can be found throughout Pandora. Many Na'vi clans make these enormous plants their 
home.