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

Aladin viewer for the region around m Persei
m Per, 57 Per
BD+42 990, HD 28704, HR 1434, WDS J04334+4304A, SAO 39604, GSC 02888-02055, HIP 21242

Type  Star
Magnitude  6.078
Right Ascension  4h 33' 24.9"  (2000)
Declination  43° 3' 50" N
Constellation  Perseus
Classification  F0V
Observing Notes

Andrew Cooper
Jan 31, 2020    Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 76x
Seeing: 7 Transparency: 6 Moon: 0%

A wide double of two pale yellow stars separated by about 2' roughly north and south, m Per is the northern star while the southern companion HD 28693 is about ½ magnitude fainter, 45' south of NGC 1582

Interestingly GAIA data shows both stars are relatively nearby, with parallax of 16.37 for m Per and 13.59 for HD 28693, the two have radically different proper motions with HD 28693 exhibiting high proper motion of 24.25mas/yr in ra and -59.91mas/yr in dec, while m Per is moving at a more sedate 5.37mas/yr in ra and 5.31mas/yr in dec

Captain William Henry Smyth
Mar 22, 1837    No. 6 The Crescent, Bedford, England (map)
150mm f/17.6 refractor by Tully 1827

A wide double star, in the left ancle of Perseus, with several small Stars in the field, of which a remarkable one of the llth magnitude is to the np of A, and seems to have escaped the eye of ♅.

A and B are both of the 8th magnitude [HD 28704 and HD 28693], and white; being Piazzi's 101 and 104 of Hora iv. The object is 99 ♅. VI., and with a reduction from the Palermo Catalogue may be thus registered:
    ♅. Pos. 198°09'  Dist. 96".42  Ep. 1783.66
P. 198°30' 116".00 1800.00
It was next measured by ♅. and S., with these results:
        Pos. 198°52'  Dist. 110".19  Ep. 1821.91
[WDS 197° 121".40 2013 ]
whence an extraordinary change of distance was shown. Subsequent measures, however, indicate some error in ♅.'s register. It will be found nearly in mid-distance of a line run from α Persei to β Tauri, at about 10° from the former.
― A Cycle of Celestial Objects Vol II, The Bedford Catalogue, William Henry Smyth, 1844
Other Data Sources for m Persei
Associated objects for m Persei
Nearby objects for m Persei
6 objects found within 120'
58 Persei BD+40 999B HD 28693
HD 28693 HD 29096 NGC 1582
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

m Persei