Alzirr

HR 2484 · HIP 32362 · ξ Gem

👁️ Naked-eye

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

Star

Apparent magnitude: 3.36 mag
Parallax: 55.56 mas → about 58.7 light-years away
Spectral type: F5IV
Right ascension: 101.3224°
Declination: 12.8956°
Designation: HR 2484
Bayer designation: ξ Gem
HIP number: 32362
IAU name adopted: 2017-06-30
Name language: Arabic
Name origin (IAU): Arabic الزِرّ , al-zirr, "the button". Allen (1899) attributes the name to Al Birūnī and it certainly does not have Greek roots as it is located at the foot of the eastern Twin.

Constellation

Light from this object takes about 59 years to reach Earth — the light you see tonight left around AD 1967 (official distance ÷ speed of light).
At magnitude 3.4 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination 12.9° — 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.