From which publication does STELLA derive its data?

STELLA, which stands for "System for Terrestrial and Electronic Logistical Analysis," primarily derives its data from the Nautical Almanac. The Nautical Almanac is a critical resource for navigators, providing essential information about the positions of celestial bodies and various navigational data. This publication assists mariners in celestial navigation, enabling them to determine their position at sea by referencing the celestial bodies' angles and locations at known times. The accurate and reliable data from the Nautical Almanac is essential for tasks such as plotting courses and determining longitude and latitude, which are foundational aspects of safe and effective maritime navigation.

The other publications mentioned, while potentially useful in a navigation context, do not serve as the primary data source for STELLA. The Marine Navigation Guide and Weather at Sea Handbook focus more on practical navigation techniques and weather conditions, respectively, while the Oceanic Data Report typically provides data on oceanographic conditions but does not centrally align with celestial navigation aid as the Nautical Almanac does.