Naos

HR 3165 · HIP 39429 · ζ Pup

👁️ Naked-eye

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

Star

Apparent magnitude: 2.25 mag
Parallax: 3.01 mas → about 1,083.6 light-years away
Spectral type: O5IAf
Right ascension: 120.896°
Declination: -40.0031°
Designation: HR 3165
Bayer designation: ζ Pup
HIP number: 39429
IAU name adopted: 2016-08-21
Name language: Greek
Name origin (IAU): Applied in recent times from the word ναῦς, Greek for the "ship", used in one Early Modern discussion as a name for the ancient constellation Argo (since divided into Puppis, Carina, and Vela).

Constellation

Light from this object takes about 1,084 years to reach Earth — the light you see tonight left around AD 942 (official distance ÷ speed of light).
At magnitude 2.3 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination -40° — 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.