Most of the stars that we can see with our eyes are double stars.
. To find it, simply use the same methodology you used to find Arcturus: follow the curve of the Big Dipper's handle to Arcturus and the same arc, continued past that brilliant fiery hued star for about the same distance, will come to Spica. In old star atlases that contained allegorical pictures, Virgo holds some spikes of wheat where Spica glows.
At about 10 p.m. sitting about 15 degrees to the upper right of Spica is a classic binary, Gamma Virginis or Porrima, one of the earliest pairs to be discovered with the telescope, by James Bradley and James Pound in 1718. Its name is to honor of the"Goddess of Prophecy." Located at a relatively close distance relative to our sun of just 39 light-years, the components are equal in brightness at magnitude 3.6. In 1920 they attained their greatest separation in telescopes, equal to about one-fifth the apparent width of. Thereafter the two stars started closing in on each other and in 2008 the couple reached a minimum separation of just 0.4 of an arc second and appeared as a single point of light.
The northern spring constellation of Virgo, one of the constellations of the zodiac. The bright star at lower left is Spica. Denebola in Leo is at top right. The field contains the realm of the galaxies in the Coma-Virgo galaxy cluster. The double star Porrima is near the center.which glows high in the southern sky this week at around 10:30 p.m. Many people hail the appearance of this backwards question mark pattern of stars as one of the first signs of spring.
The third brightest star of Leo is located in the blade of the Sickle, known as Algieba. The name is probably is from an erroneous form of the Arabic Al Jabbah or Juba,"the Lion's Mane." It is a well-known binary that is not too dissimilar from Gamma Virginis, having yellowish components of magnitude 2.3 and 3.5. Both systems have greatly elongated orbits. Contrary to popular belief, however, the smaller component of a binary system does not revolve around a motionless larger star.
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