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

Brilliant pale yellow, an 11th magnitude companion visible 1' north

Captain William Henry Smyth
Aug 26, 1837    No. 6 The Crescent, Bedford, England (map)
150mm f/17.6 refractor by Tully 1827

A wide and unequal double star, on the Hero's left shoulder, where it forms the northern apex of a nearly equilateral triangle with α and θ Persei. A 4, flushed white; B 14, clear blue. This is No. 2170 of H.'s Fifth Series, and a line through them leads nearly over a l0th-magnitude star in the nf quadrant, the angle of which with A is = 51°.3, and Δ RA = 18s.4; but I am quite at fault respecting a companion recorded by Piazzi in note No. 234, Hora II., in these terms: "Duplex: altera præcedit 0".2 temporis, 8" ad Boream." A movement in space is assigned to the principal, of which the amount has been thus stated:

P.... RA -0".15 Dec. -0".05
B.... +0".l2 0".00
[Hipparcos +0".00051 -0".00592]

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

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