Siwarha

- · α Ori B

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

Star

Apparent magnitude: 8.2 mag
Right ascension: 88.7929°
Declination: 7.4071°
Designation: -
Bayer designation: α Ori B
IAU name adopted: 2025-09-22
Name language: Arabic
Name origin (IAU): The name Betelgeuse means “Hand of al-Jawzā’,” with “al-jawzā’” being the name of an old Arabian female figure whose stars were largely consistent with Greek Orion. Given that alpha Ori A orbits the hand of al-Jawzā’, the discovery team suggested that the companion star be named سوارها (Siwarha), or “Her Bracelet.”

Constellation

At magnitude 8.2 it is fainter than the naked-eye limit (about 6) — you need binoculars or a telescope.
Declination 7.4° — it rises above the horizon in Seoul (37.6° N), so it is visible from Korea in the right season.
Its IAU name «Siwarha» comes from Arabic (IAU Working Group on Star Names).

Worked out from this object's official values.