Nusakan

HR 5747 · HIP 75695 · β CrB

👁️ Naked-eye

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

Star

Apparent magnitude: 3.68 mag
Parallax: 29.17 mas → about 111.8 light-years away
Spectral type: F0p
Right ascension: 231.9573°
Declination: 29.1057°
Designation: HR 5747
Bayer designation: β CrB
HIP number: 75695
IAU name adopted: 2016-09-12
Name language: Arabic
Name origin (IAU): Applied in recent times from the collective pre-Islamic Arabian name al-nasaqan, "the Two Lines [of stars]" for two asterisms in today's Hercules, Serpens, Ophiuchus, and Lyra. al-nasaqan originally marked the boundaries of the pre-Islamic Arabian 'al-rauda, "the Pasture". These boundaries were "the Northern Line" al-nasaq al-sha'ami, and "the Southern Line" al-nasaq al-yamani.

Constellation

Light from this object takes about 112 years to reach Earth — the light you see tonight left around AD 1914 (official distance ÷ speed of light).
At magnitude 3.7 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination 29.1° — 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.