Wasat
HR 2777 · HIP 35550 · δ Gem
👁️ Naked-eye
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 3.53 mag
- Parallax
- 53.94 mas → about 60.5 light-years away
- Spectral type
- F0IV...
- Right ascension
- 110.0307°
- Declination
- 21.9823°
- Designation
- HR 2777
- Bayer designation
- δ Gem
- HIP number
- 35550
- IAU name adopted
- 2016-08-21
- Name language
- Arabic
- Name origin (IAU)
- From the Arabic word wasat, "middle," used by a Arabic commentator who was speculating on the meaning of the pre-Islamic Arabian constellation name al-jauza'. Reference was made to al-jauza's being in the "middle" (wasat) of the sky (perhaps meaning the celestial equator). The reference was intended to apply to the pre-Islamic Arabian figure located in today's Orion, however it was under the constellation which is today Gemini that the reference appeared (note the confusion between Orion and Gemini mentioned under α Ori). Therefore, after transliteration into Latin, it was in Gemini (to δ) that the word "Wasat" was arbitrarily applied as a star name in recent times.
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 60 years to reach Earth — the light you see tonight left around AD 1966 (official distance ÷ speed of light).
- At magnitude 3.5 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
- Declination 22° — 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.