Theemin

HR 1464 · HIP 21393 · υ2 Eri

👁️ Naked-eye

📋 A written introduction is coming — for now this page shows official values only.

Star

Apparent magnitude: 3.82 mag
Parallax: 15.25 mas → about 213.9 light-years away
Spectral type: G8III
Right ascension: 68.8877°
Declination: -30.5623°
Designation: HR 1464
Bayer designation: υ2 Eri
HIP number: 21393
IAU name adopted: 2017-02-01
Name language: Arabic
Name origin (IAU): The formation of this name begins with one of the words used by Ptolemy to describe this star in the Almagest: καμπή, "the bend [of the river]". This was misread by the Arabs, who transliterated the word as bhmn. This, in turn, was transliterated as beemun in the Medieval Latin Almagest, which was corrupted to beemin, beemim, etc. Then in Early Modern times, the derivation of the form beemim was erroneously attributed to the Hebrew word te'omim, "twins." Subsequently this erroneous word, written as Theemim, then "Theemin," was applied as a star name to any of the various dim stars running from u1 to h Eri.

Constellation

Light from this object takes about 214 years to reach Earth — the light you see tonight left around AD 1812 (official distance ÷ speed of light).
At magnitude 3.8 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination -30.6° — it rises above the horizon in Seoul (37.6° N), so it is visible from Korea in the right season.

Worked out from this object's official values.