...Spica in Virgo, a star of the first magnitude, is a little over 20°northwest of α Libræ...
William Tyler Olcott 「A Field Book of the Stars」
...Arcturus, Cor Caroli, Denebola, and Spica form a figure about 50° inlength, called the Diamond of Virgo...
William Tyler Olcott 「A Field Book of the Stars」
...The so-called "Diamond of Virgo," is clearly shown on this plate...
William Tyler Olcott 「A Field Book of the Stars」
...In the southeast he may see Virgo...
William Tyler Olcott 「A Field Book of the Stars」
... The constellation Virgo...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...The constellation of Virgo is principally characterised by the firstmagnitude star called Spica, or α Virginis...
Robert Stawell Ball 「The Story of the Heavens」
...In Coma Berenices there is an outlying field of the marvelousnebulous region of Virgo, which we may exploreon some future evening...
Garrett Serviss 「Pleasures of the telescope」
...It is the samedistance northwest of Spica, in Virgo, and forms with Spica andArcturus a large equilateral triangle...
William Tyler Olcott 「A Field Book of the Stars」
...The group lies well within a triangle formed by Denebola, Arcturus, inBoötes, and Cor Caroli, in Canes Venatici, which triangle is the upperhalf of the Diamond of Virgo...
William Tyler Olcott 「A Field Book of the Stars」
...Itis about 35° east of Denebola, in Leo, and nearly as far north ofSpica, in Virgo, and forms with these two a large equilateraltriangle...
William Tyler Olcott 「A Field Book of the Stars」
...In 1891 Vogelfound, from photographs of the spectrum of Spica, the first magnitudestar in Virgo, that this star alternately recedes from and approaches tothe solar system, the period being four days...
Robert Stawell Ball 「The Story of the Heavens」
...It is Spica, the great gem of Virgo, and, yielding to itsattraction, we now enter the richer constellation overwhich it presides ()...
Garrett Serviss 「Pleasures of the telescope」
...Next east of Virgo is Libra, which contains a fewnotable objects ()...
Garrett Serviss 「Pleasures of the telescope」
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