Zhang

HR 3903 · HIP 48356 · υ1 Hya

👁️ Naked-eye

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

Star

Apparent magnitude: 4.11 mag
Parallax: 12.36 mas → about 263.9 light-years away
Spectral type: G6/G8III
Right ascension: 147.8695°
Declination: -14.8466°
Designation: HR 3903
Bayer designation: υ1 Hya
HIP number: 48356
IAU name adopted: 2017-06-30
Name language: Chinese
Name origin (IAU): determinitive star of lunar mansion Zhang (The Stomach [of the Red Fire Bird] or a Bow or Bird Catcher, an Extended Net, Spread or "to open") whose naming constellation constists of 6 stars according to sources back to the 3rd millennium BCE

Constellation

Light from this object takes about 264 years to reach Earth — the light you see tonight left around AD 1762 (official distance ÷ speed of light).
At magnitude 4.1 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination -14.8° — 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.