Upsilon1 Cancri
DSS image of Upsilon1 Cancri
Overlaid DSS image of Upsilon1 Cancri, 60' x 60' with north at top and west to the right

Aladin viewer for the region around Upsilon1 Cancri
υ1Cnc, 30Cnc
BD+24 1940, HD 72041, HR 3355, SAO 80229, GSC 01941-02827, HIP 41816

Type  Star
Magnitude  5.6
Right Ascension  8h 31' 30.5"  (2000)
Declination  24° 4' 52" N
Constellation  Cancer
Classification  F0IIIn
Observing Notes

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 found 1° NW]

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. 1782.09
H. and S. 37° 47' 6".04 1822.12
[WDS 53° 5".70 2019 ]
it 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.
― A Cycle of Celestial Objects Vol II, The Bedford Catalogue, William Henry Smyth, 1844
Other Data Sources for Upsilon1 Cancri
Nearby objects for Upsilon1 Cancri
4 objects found within 60'
28 Cancri IC 509
Upsilon2 Cancri
Credits...

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

A complete list of credits and sources can be found on the about page

Upsilon1 Cancri