Gliese 205

Gliese 205 is a nearby red dwarf star of spectral type M1.5, located in the constellation Orion at a distance of from Earth.

History of observations

A designation of this star, used in "Discovery Name" column of Table 4 of Kirkpatrick et al. , is Strb. 1611. This name was taken from van de Kamp . The origin of this designation is not explained in these articles. Anyway, it is not Friedrich [Georg Wilhelm von Struve|Struve]'s 1827 catalogue of binary stars, since for this catalogue another prefix.
Of the other designations, the earliest one is W. B. V. 592 or Weisse I, 5^h 592. This catalogue was based on observations, made by Bessel in 1821–1833 and published in 1822–1838 in Astronomische Beobachtungen auf der königlichen Universitäts-Sternwarte in Königsberg as "Beobachtungen der Sterne, nach Zonen der Abweichung angestellt". Gliese 205, probably, was observed on January 8, 1823 in zone 140.

Search for planets

In a 2019 preprint, two candidate planets were detected using the radial velocity method, both Neptune-mass with orbital periods of 17 and 270 days. However, a study of this star in 2023 found no evidence of planets, and determined a stellar rotation period of 34.4 days.