Argelander

[ ahr-guh-lahn-duh r ]

/ ˌɑr gəˈlɑn dər /

Frie·drich Wil·helm Au·gust

[free-drikh vil-helm ou-goo st] /ˈfri drɪx ˈvɪl hɛlm ˈaʊ gʊst/, 1799–1875, German astronomer.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for argelander

The entire heavens has been covered by Argelander in the northern hemisphere, and Gould in the southern—over 700,000 stars in all.
Astronomy|David Todd
This comet has an elliptic orbit, and its period, according to Argelander, is 3065 years.
Comets and Meteors|Daniel Kirkwood
This is more than three times the Argelander number to the ninth magnitude.
The Popular Science Monthly, August, 1900|Various
But the appearance of Argelander's prize-essay in 1837 changed the aspect of the question.
A Popular History of Astronomy During the Nineteenth Century|Agnes M. (Agnes Mary) Clerke

Modern photometric measures confirm the estimates of Al-Sufi and Argelander.
Astronomical Curiosities|J. Ellard Gore