Neichu
HR 8454 · HIP 109410 · π2 Peg
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 4.29 mag
- Parallax
- 12.4 mas → about 263 light-years away
- Spectral type
- F5III
- Right ascension
- 332.4968°
- Declination
- 33.1782°
- Designation
- HR 8454
- Bayer designation
- π2 Peg
- HIP number
- 109410
- IAU name adopted
- 2026-08-13
- Name language
- Chinese
- Name origin (IAU)
- Nèichŭ (Inner Pestle, 內杵) is a three-star Chinese asterism that forms a super-constellation with Jiù (Mortar, 臼); they are attested for more than 2000 years.
Source:IAU Working Group on Star Names · checked 2026-11-02 ↗ESA Hipparcos Catalogue (ESA Gaia Archive) · checked 2026-11-03 ↗
Related
Constellation
In everyday life
- Light from this object takes about 263 years to reach Earth — the light you see tonight left around AD 1763 (official distance ÷ speed of light).
- At magnitude 4.3 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination 33.2° — 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.