 |
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
|
|
Besselian year
The basic unit of the Besselian epoch, defined as the time taken for the right ascension of the mean sun to increase by 24 hours starting from when the mean sun’s longitude is 280° (chosen because it corresponds roughly to January 1). It is virtually the same as the tropical year.
Related category
• CELESTIAL MECHANICS
Also on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History
Transport Concepts & Designs (partner site)