Diphda
HR 188 · HIP 3419 · β Cet
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 2.01 mag
- Parallax
- 33.86 mas → about 96.3 light-years away
- Spectral type
- K0III
- Right ascension
- 10.8974°
- Declination
- -17.9866°
- Designation
- HR 188
- Bayer designation
- β Cet
- HIP number
- 3419
- IAU name adopted
- 2016-08-21
- Name language
- Arabic
- Name origin (IAU)
- Applied in recent times from an abbreviation of its pre-Islamic Arabian name al-difdi' al-thani, "the Second Frog" (a PsA was the pre-Islamic Arabians' "First Frog," al-difdi' al-awwal).
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 96 years to reach Earth — the light you see tonight left around AD 1930 (official distance ÷ speed of light).
- At magnitude 2 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination -18° — 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.