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We report the discovery of a new quadruply imaged quasar surrounded by anoptical Einstein ring candidate. Spectra of the different components of 1RXSJ113155.4-123155 reveal a source at z=0.658. Up to now, this object is theclosest known gravitationally lensed quasar. The lensing galaxy is clearlydetected. Its redshift is measured to be z=0.295. Additionally, the total Vmagnitude of the system has varied by 0.3 mag between two epochs separated by33 weeks. The measured relative astrometry of the lensed images is best fittedwith an SIS model plus shear. This modeling suggests very high magnification ofthe source (up to 50 for the total magnification) and predicts flux ratiosbetween the lensed images significantly different from what is actuallyobserved. This suggests that the lensed images may be affected by a combinationof micro or milli-lensing and dust extinction effects.Comment: 4 pages, 3 figures, published in A&

A quadruply imaged quasar with an optical Einstein ring candidate: 1RXS J113155.4–123155