Results of observations for determining the relative brightness of the Asteroids made with the Washington Equatoreal, by J. Ferguson

✍ Scribed by J. Ferguson

• Publisher: John Wiley and Sons
• Year: 1852
• Tongue: English
• Weight: 135 KB
• Volume: 34
• Category: Article
• ISSN: 0004-6337
• DOI: 10.1002/asna.18520341105

✦ Synopsis

11 12 13 Weisse 23h 252 Anon. 9th Mag. Weisse O'I 116 -983 -219 -280 -317 -310 436 -514

N o

Encke*s Comet was first seen a t Durham on Janr. 12, and again on Jan.16, but high wind on both nights prevented more than a rough estimation of its position. On the 17th it mas a little brighter, but still very faint, and the measures mere in consequence taken with the ring-micrometer. On and after Febr. 8, the Comet was considerably brighter, and exhibited a strong condensation of central light, which atlniitted of accurate ohservation by the wire micrometer. On t h e earlier evenings the coma seemed to spreiid slightly towards the e. f. direction, but subsequently no elliptical form was perceived. The whole extent of the coma was below 2 mi. nutes of arc in all cases.