Seginus

HR 5435 · HIP 71075 · γ Boo

👁️ Naked-eye

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

Star

Apparent magnitude: 3.02 mag
Parallax: 37.58 mas → about 86.8 light-years away
Spectral type: A7IIIvar
Right ascension: 218.0195°
Declination: 38.3082°
Designation: HR 5435
Bayer designation: γ Boo
HIP number: 71075
IAU name adopted: 2016-08-21
Name language: Latin
Name origin (IAU): The formation of this name begins with the Greek constellation name βοώτης (Boötes), which was transliterated and then corrupted in the manuscripts of the Arabic Almagest. One of these corruptions, in turn, was transliterated into Latin as theguius, which became further corrupted into cheguius, ceginus, etc. One form, Ceginus, was applied as a star name by late medieval times, and "Seginus" is its recent spelling.

Constellation

Light from this object takes about 87 years to reach Earth — the light you see tonight left around AD 1939 (official distance ÷ speed of light).
At magnitude 3 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination 38.3° — 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.