A long-period comet discovered in 1956 November by the Belgian astronomers Silvain Arend (1902–92) and Georges Roland (1922–91); formerly designated 1957 III. It reached perihelion, 0.32 au, on 1957 April 8. Closest approach to Earth, 0.57 au, was on April 21. At peak brightness, the comet reached magnitude −1, with a tail of 25–30°. It also had a prominent antitail. Comet Arend–Roland has a hyperbolic orbit (eccentricity 1.0002) of inclination 119°.9.

http://cometography.com/lcomets/1956r1.html Information page at Cometography website.