Lesath

HR 6508 · HIP 85696 · υ Sco

👁️ Naked-eye

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

Star

Apparent magnitude: 2.65 mag
Parallax: 5.66 mas → about 576.2 light-years away
Spectral type: B2IV
Right ascension: 262.691°
Declination: -37.2958°
Designation: HR 6508
Bayer designation: υ Sco
HIP number: 85696
IAU name adopted: 2016-08-21
Name language: Arabic
Name origin (IAU): The formation of this name begins with the Greek term "(foggy) conglomeration," used by Ptolemy in the Tetrabiblos in describing several nebulous sky objects (in the present case, probably the open cluster M7). Ptolemy's term was translated by the Arabs as al-latkha, "the Spot." This word in turn became transliterated and corrupted in Medieval Latin to alascha, which was used in astrological texts in connection with Scorpius' tail. In Early Modern times, the derivation of alascha was erroneously attributed to the Arabic word las'a, "sting, or bite (of a poisonous animal)," rather than to al-latkha. Subsequently the erroneous word, written as "Lesath," was applied as a star name to u Sco (and in recent times, also to λ Sco).

Constellation

Light from this object takes about 576 years to reach Earth — the light you see tonight left around AD 1450 (official distance ÷ speed of light).
At magnitude 2.7 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination -37.3° — 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 6508 · HIP 85696 · υ Sco

👁️ Naked-eye

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

Apparent magnitude: 2.65 mag
Parallax: 5.66 mas → about 576.2 light-years away
Spectral type: B2IV
Right ascension: 262.691°
Declination: -37.2958°
Designation: HR 6508
Bayer designation: υ Sco
HIP number: 85696
IAU name adopted: 2016-08-21
Name language: Arabic
Name origin (IAU): The formation of this name begins with the Greek term "(foggy) conglomeration," used by Ptolemy in the Tetrabiblos in describing several nebulous sky objects (in the present case, probably the open cluster M7). Ptolemy's term was translated by the Arabs as al-latkha, "the Spot." This word in turn became transliterated and corrupted in Medieval Latin to alascha, which was used in astrological texts in connection with Scorpius' tail. In Early Modern times, the derivation of alascha was erroneously attributed to the Arabic word las'a, "sting, or bite (of a poisonous animal)," rather than to al-latkha. Subsequently the erroneous word, written as "Lesath," was applied as a star name to u Sco (and in recent times, also to λ Sco).

Constellation

Light from this object takes about 576 years to reach Earth — the light you see tonight left around AD 1450 (official distance ÷ speed of light).
At magnitude 2.7 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination -37.3° — 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.