HD 91312 [SEP] constellation
HD 91312
HD 91312 (HR 4132, HIP 51658) is a star in the constellation Ursa Major. Its apparent magnitude is 4.73. It is the brightest star of Ursa Major without Flamsteed designation.
History of observations.
This star is relatively bright, but it was rarely included in old catalogues. Catalogues and atlases it was not included in are for example those by Ptolemy and all its derivatives and translations (by as-Sufi, al-Biruni, Ulugh Beg, Copernicus, Clavius etc.),
Battery D was reinforced to its authorized wartime strength.
Detachments from Btry A formed Btry 80-X in December 1941; a second detachment helped form the 804th CA (HD) Btry (Sep). Btry F at Sand Is. was designated the 807th CA (HD) Btry (Sep), while a second detachment helped organize the 715th CA (HD) Btry (Sep) 10-21-42. During World War II, various changes were made in the makeup of the 55th CA. The 55th CA (