Type | Multiple Star |
---|---|
Magnitude | 6.4 | Right Ascension | 8h 26' 39.8" (2000) |
Declination | 24° 32' 3" N |
Constellation | Cancer |
Description | Binary 6.9/7.5 4" @ 53° |
Classification | F0V+F7V |
Captain William Henry Smyth
Mar 4, 1831 No. 6 The Crescent, Bedford, England (map)
150mm f/17.6 refractor by Tully 1827
[Smyth's entry CCCXXI is clearly labeled υ1 Cnc while the coordinates given and description are that of 24 Cnc located 1° NW of υ1 Cnc]
A neat double star, on the Crab's northern middle leg; where a line carried from Sirius through Procyon, and extended rather more than as far again into the north-east, will reach it. A 7, pale white; B 7½, greyish. This fine object is composed of Nos. 65 and 66 of Piazzi's Hora VIII., and it is 41 ♅. II. By a comparison of these measures:♅. Pos. 57° 51' Dist. 4".00 Ep. 1782.09it was inferred that a retrograde annual angular motion of -0°.514 had taken place. The subsequent observations, however, of Professor Struve, Sir John Herschel, and myself, afford no support to this supposed rotation; consequently some error must exist in ♅.'s register. And it should be remarked—albeit the process cannot demand implicit reliance—that a sifting of Piazzi's mean places for the mid-epoch, 1800, yields an angle =45° 30', and a distance of 5".2.
H. and S. 37° 47' 6".04 1822.12
[WDS 53° 5".70 2019 ]― A Cycle of Celestial Objects Vol II, The Bedford Catalogue, William Henry Smyth, 1844
24 Cancri A | 24 Cancri B | 28 Cancri |
IC 508 | NGC 2575 |
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
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