He also discovered some of the Sun's nearest neighbors, including Luyten's Star as well as the high–proper motion star system Luyten 726-8, which was soon found to contain the remarkable flare star UV Ceti.
Ia juga menemukan beberapa tetangga dekat matahari, termasuk bintang yang kemudian dinamai menurut namanya, begitu pula sistem gerakan sejati-tinggi Luyten 726-8, yang diketahui mengandung bintang kantar UV Ceti yang menarik perhatian.