Aludra

HR 2827 · HIP 35904 · η CMa

👁️ Naked-eye

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

Star

Apparent magnitude: 2.45 mag
Spectral type: B5Ia
Right ascension: 111.0238°
Declination: -29.3031°
Designation: HR 2827
Bayer designation: η CMa
HIP number: 35904
IAU name adopted: 2016-07-20
Name language: Arabic
Name origin (IAU): Applied in recent times from the alternative Arabic asterism name al-(udhra, "the Virginity", and (udhrat aljauza), "the Virginity [?] of al-jauza)", for ε, δ, η and ο2 CMa. The name (udhrat al-jauza), by tying it with the nearly Arabic asterism al-jauza) (today's Orion), may have been an attempt to apply significance to the enigmatic and perhaps older name al-(udhra.

Constellation

At magnitude 2.5 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination -29.3° — it rises above the horizon in Seoul (37.6° N), so it is visible from Korea in the right season.
Its IAU name «Aludra» comes from Arabic (IAU Working Group on Star Names).

Worked out from this object's official values.