Friedrich Wilhelm Argelander (1799–1875)
Born 1799 CE, died 1875 CE.
Friedrich Wilhelm August Argelander (22 March 1799 – 17 February 1875) was a German astronomer. He is known for his determinations of stellar brightnesses, positions, and distances.
Text from the Wikipedia article Friedrich_Wilhelm_Argelander, licensed CC BY-SA 4.0.