HD 45317

No dss image available for HD 45317
 
Aladin viewer for the region around HD 45317
Σ 910, BD+00 1418, WDS J06267+0027, SAO 113892, GSC 00133-01848, HIP 30670, Gaia DR3 3120367824439378688

Type  Star
Magnitude  6.87
Right Ascension  6h 26' 43.4"  (2000)
Declination  0° 27' 15" N
Constellation  Monoceros
Classification  K0III
Observing Notes

Captain William Henry Smyth
Feb 21, 1833    No. 6 The Crescent, Bedford, England (map)
150mm f/17.6 refractor by Tully 1827

A coarsely triple star, between the boundary line of Orion and the Unicorn's chest; it is about 17° from Procyon, on a ray carried to the west-south-west through Orion's sword cluster and Rigel. A 7½, topaz yellow; B and C 8½, both of a plum tinge. B is most exquisitely double, Piazzi's No. 105, Hora VI., and 910 of the Dorpat Catalogue, where it was classed among the vicinissimæ. "When Struve first subjected it to measurement, under a power of 540, it was:
    Pos. 168° 48' Dist. 0".78 Ep. 1825.12
[WDS 151° 0".50 1991 ]
On considering the great difficulty of an object which my best powers only elongated, these observations may be considered to correspond. Σ. afterwards added A to BC, under the following determinations, with magnifying power 320:

Pos. 150°.57 Dist. 66".15 Ep. 1831.68
[WDS 152° 66".00 2012 ]
― A Cycle of Celestial Objects Vol II, The Bedford Catalogue, William Henry Smyth, 1844
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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

HD 45317