Andrew Cooper
Aug 20, 2021    Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 76x
Seeing: 6 Transparency: 6 Moon: 0%

Σ 331 is a very pretty binary, HR 890 is the 5.2 magnitude primary, with HR 891, the 6.7 magnitude companion easily visible 12" east, both white, Gaia DR2 data shows matching parallax and proper motions for the pair

Captain William Henry Smyth
Feb 6, 1835    No. 6 The Crescent, Bedford, England (map)
150mm f/17.6 refractor by Tully 1827

A neat double star, on the nape of the Hero's neck, slightly preceding a line carried from Algol to Polaris, at one-third of the distance. A 6, silvery white; B 8, sapphire blue. This fine object escaped the eaglesight of ♅.; but it was marked "duplex" by Piazzi; and S., No. 422, thus measured it:

    Pos. 85° 20'  Dist. 12".96  Ep. 1823.97
   [WDS  86°            12".00      2019   ]

The pair forms No. 331 of the Dorpat Catalogue, where the observations of Σ. confirm the fixity shown in the above results. But though Piazzi made note of the comes following to the north, there can be little doubt of his having observed and entered it as No. 222 of the Palermo Catalogue, since a careful reduction yields these results:

    As comes.   Pos. 83°.5  Dist. 15"  Ep. 1800
    As No. 222.      79 .2        12

― A Cycle of Celestial Objects Vol II, The Bedford Catalogue, William Henry Smyth, 1844

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