Muphrid

HR 5235 · HIP 67927 · η Boo

👁️ Naked-eye

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

Star

Apparent magnitude: 2.68 mag
Parallax: 87.75 mas → about 37.2 light-years away
Spectral type: G0IV
Right ascension: 208.6712°
Declination: 18.3977°
Designation: HR 5235
Bayer designation: η Boo
HIP number: 67927
IAU name adopted: 2016-09-12
Name language: Arabic
Name origin (IAU): The formation of this name begins with the ancient Arabic name for α Boo: al-simak al-ramih, "the Lance-bearing simak" (the meaning of simak is uncertain). It seems that later Arabic poets expanded upon this name by making mention of some separate "lance" (al-rumh) that accompanied the star α Boo. Subsequent Arabs attempted to identify this fictitious lance with actual stars, sometimes saying it was η Boo with nearby stars, sometimes saying it was "η Boo alone" (where "alone", in arabic, is written mufradan). From these discussions came, with a slight copying mistake in the Arabic, the erroneous Arabic name mufrad al-ramih, roughly translating as "the Isolated Single One of the Lance-Bearer". With a wrong vocalization and with abbreviation, this erroneous name, as "Muphrid", was applied in recent times.

Constellation

Light from this object takes about 37 years to reach Earth — the light you see tonight left around AD 1989 (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 18.4° — 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 5235 · HIP 67927 · η Boo

👁️ Naked-eye

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

Apparent magnitude: 2.68 mag
Parallax: 87.75 mas → about 37.2 light-years away
Spectral type: G0IV
Right ascension: 208.6712°
Declination: 18.3977°
Designation: HR 5235
Bayer designation: η Boo
HIP number: 67927
IAU name adopted: 2016-09-12
Name language: Arabic
Name origin (IAU): The formation of this name begins with the ancient Arabic name for α Boo: al-simak al-ramih, "the Lance-bearing simak" (the meaning of simak is uncertain). It seems that later Arabic poets expanded upon this name by making mention of some separate "lance" (al-rumh) that accompanied the star α Boo. Subsequent Arabs attempted to identify this fictitious lance with actual stars, sometimes saying it was η Boo with nearby stars, sometimes saying it was "η Boo alone" (where "alone", in arabic, is written mufradan). From these discussions came, with a slight copying mistake in the Arabic, the erroneous Arabic name mufrad al-ramih, roughly translating as "the Isolated Single One of the Lance-Bearer". With a wrong vocalization and with abbreviation, this erroneous name, as "Muphrid", was applied in recent times.

Constellation

Light from this object takes about 37 years to reach Earth — the light you see tonight left around AD 1989 (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 18.4° — 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.