Fixed star:  WASAT
Constellation:  Delta Gemini
Longitude 1900:  17CAN07. Longitude 2000:  18CAN31.
Declination 1900:  +22.10'. Declination 2000:  +21.58'.
Right ascension:  07h20m. Latitude:  -00.10'.
Spectral class:  A8. Magnitude:  3.5.

History of the star: A double star, pale white and purple, on the right arm of the Northern Twin (Castor). Wasat or Wesat from Arabic Wasat as-Sama' (1), "Middle" of the sky. Or from Al Wasat, the Middle, i. e. of the constellation; but some have referred this to the position of the star very near to the ecliptic, the central circle. In China it was Ta Tsun, the Great Wine-jar.

[Star Names, Their Lore and Meaning, Richard Hinchley Allen, 1889].

The planet Pluto was discovered in this constellation on Feb 18 1930 close to this star by Clyde Tombaugh.

The astrological influences of the constellation: "Ptolemy makes the following observations; the stars in the feet of Gemini have an influence similar to that of Mercury, and moderately to that of Venus; the bright stars in the thighs are like Saturn. It is said to cause trouble and disgrace, sickness, loss of fortune, affliction and danger to the knees. By the Cabalists it is associated with the Hebrew letter Qoph and the 19th Tarot Trump, The Sun". (Fixed Stars and Constellations in Astrology , Vivian E. Robson, 1923)

The astrological influences of the constellation given by Manilius:

"The arms to shoulders joined are accounted to the Twins" [Manilius p.119]

From the Twins come less laborious callings and a more agreeable way of life, provided by varied song and voices of harmonious tone, slender pipes, the melodies inborn in strings and the words fitted thereto : those so endowed find even work a pleasure. They would banish the arms of war, the trumpet's call, and the gloom of old age : theirs is a life of ease and unfading youth spent in the arms of love. They also discover paths to the skies, complete a survey of the heavens with numbers and measurements, and outstrip the flight of the stars: nature yields to their genius, which it serves in all things. So many are the accomplishments of which the Twins are fruitful. [Manilius, Astronomica, 1st century AD. p.281.]

 

 The general astrological influences of the star: Connected with chemicals, poisons and gas. Violence, malevolence, destructiveness as a first principal. (Robson). 

Because of the Saturnine quality of this star, it gives a heaviness and tendency to pessimism.  Apart from that however, Al Wasat does show up a quality of being able to speak with clear authority when others are waffling and prominence in public affairs or management is often the result. (The Living Stars, Dr. Eric Morse).