Students of Sanders school in London have discovered three new variable stars in the southern constellation of Compass (Pyxis). The discoveries were made on the images from 20-inch T31 telescope in Australia. The first variable star was found by Hannah Cornwell, the second one by Patrick Hynes-Hamilton and the third one - jointly by Emily Wilkins and Alicia Farrant. All three objects have turned to be the eclipsing binary stars of W UMa (EW) type. The variable Cornwell 1 has the shortest period - 5.97 hours. Wilkins-Farrant 1 is the brightest one, changing its brightness from 14.2 to 14.5 magnitude every 7.61 hours. The components of Hynes-Hamilton 1 complete one revolution around each other in 8.555 hr. Patrick's variable is remarkable due to the different depths of eclipses: the primary minimum is at 15.5m and the secodary - at 15.4m with the maxima at 14.9m. Yet it is located in the beautiful stellar field between two colorful stars - the blue one and the red one.
The stars discovered by the London schoolchildren have been officially registered in the International Variable Star Index AAVSO VSX.