Beobachtung des Cometen 1900 a

✍ Scribed by F. Cohn

• Publisher: John Wiley and Sons
• Year: 1900
• Tongue: English
• Weight: 88 KB
• Volume: 152
• Category: Article
• ISSN: 0004-6337
• DOI: 10.1002/asna.19001520506

✦ Synopsis

In a photograph taken by Prof. Max Wolf on June I , 1891, with a lens having an aperture of 134 mm and a focal length of 770 mm, and published in BKnowledgea for 1891, p. 189, the variable appears distinctly fainter than e (est. mag. = 10.2); and in another one published in the same periodical, p.188, taken on the nights of Sept. 9 and 10, 1891, the est. mag. of the variable is 9.6.

The above observations are satisfied by a period of 31.0 days, though there is still considerable uncertainty as 2 0 Hove Park Villas, Hove, 1900 Febr. 14. to whether this is really the true period. The following visual observations were also made with a zs/4 in. refractor.