Zubenelgenubi

HR 5531 · HIP 72622 · α2 Lib

👁️ Naked-eye

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

Star

Apparent magnitude: 2.75 mag
Parallax: 43.03 mas → about 75.8 light-years away
Spectral type: A3IV
Right ascension: 222.7196°
Declination: -16.0418°
Designation: HR 5531
Bayer designation: α2 Lib
HIP number: 72622
IAU name adopted: 2016-08-21
Name language: Arabic
Name origin (IAU): Applied in Early Modern times from its name for the Arabic Almagest period al-zubana al-janubi, the Southern Claw ( of the Scorpion)." The stars of Libra were interpreted by the Baby!onians as "the Claws of Scorpius" (thus forming a much larger Scorpion), and alternatively (perhaps in a more recent stage) they were made an independent constellation, "the Balance." Both these conceptions lived on until the Greeks and, partly, the pre-Islamic Arabians. Previous to Greek influences, the pre-Islamic Arabians used the name al-zubanayan, "the Two Claws ( of the Scorpion}," for the lunar mansion marked by α and β Lib. (Ind-A al-zubanayan is obviously related etymologically to Babylonian zibanutu, but the latter, also marked by α and β Lib, meant "the Balance"). Our modern name is occasionally seen abbreviated as Zuben'ubi".

Constellation

Light from this object takes about 76 years to reach Earth — the light you see tonight left around AD 1950 (official distance ÷ speed of light).
At magnitude 2.8 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination -16° — 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.

HR 5531 · HIP 72622 · α2 Lib

👁️ Naked-eye

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

Apparent magnitude: 2.75 mag
Parallax: 43.03 mas → about 75.8 light-years away
Spectral type: A3IV
Right ascension: 222.7196°
Declination: -16.0418°
Designation: HR 5531
Bayer designation: α2 Lib
HIP number: 72622
IAU name adopted: 2016-08-21
Name language: Arabic
Name origin (IAU): Applied in Early Modern times from its name for the Arabic Almagest period al-zubana al-janubi, the Southern Claw ( of the Scorpion)." The stars of Libra were interpreted by the Baby!onians as "the Claws of Scorpius" (thus forming a much larger Scorpion), and alternatively (perhaps in a more recent stage) they were made an independent constellation, "the Balance." Both these conceptions lived on until the Greeks and, partly, the pre-Islamic Arabians. Previous to Greek influences, the pre-Islamic Arabians used the name al-zubanayan, "the Two Claws ( of the Scorpion}," for the lunar mansion marked by α and β Lib. (Ind-A al-zubanayan is obviously related etymologically to Babylonian zibanutu, but the latter, also marked by α and β Lib, meant "the Balance"). Our modern name is occasionally seen abbreviated as Zuben'ubi".

Constellation

Light from this object takes about 76 years to reach Earth — the light you see tonight left around AD 1950 (official distance ÷ speed of light).
At magnitude 2.8 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination -16° — 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.