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David

Darling

Arend-Roland, Comet

Comet Arend-Roland

Comet Arend-Roland (C/1956 R1) is a long-period comet discovered in November 1956, by Belgian astronomers Silvain Arend (1902–1992) and Georges Roland (1922–1991). It reached perihelion (0.32 AU) on April 8, 1957, passed within 0.57 AU of Earth on April 21, and reached a maximum brightness of magnitude -1.

 

Comet Arend-Roland developed a tail up to 30° long in photographs and a prominent spike-like antitail. Its orbit was hyperbolic (eccentricity 1.0002) with an inclination of 119.9°.