1844, William Henry Smyth, “θ1 Orionis”, in Cycle of Celestial Objects, for the Use of Naval, Military, and Private Astronomers, volume the second (The Bedford Catalogue) (in English), London: John W[illiam] Parker,[…], page 130:
A multiple star, the beautiful trapezium in the “Fish’s mouth” of the vast nebula in the middle of Orion’s sword-scabbard. A 6, pale white; B 7, faint lilac; C 7½, garnet; D 8, reddish; and E 15, blue. This was entered 1 ♅. iii., in November, 1776, and had the honour of being the object to which the grand forty-foot reflector was first directed, in February, 1787, under the designation of “quadruple.” As a trapezium it was gazed at, measured, and delineated, for upwards of fifty years, when Σ. announced it “quintuplex,” by the addition of the little star E. Now when we consider the eye of ♅., the measures of S., and the rigorous examination of H., this little companion must be looked upon as variable; […]
While neither symbol is exclusive, ⟨⛢⟩ is somewhat more frequent in astronomy, and ⟨♅⟩ is very much more frequent in astrology. Use of either symbol is now uncommon in astronomy.
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Serif form
A decorative variant in the Netherlands
An abstract variant
Symbol on a cerulean background
Transit of Uranus.svg)
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