Alya

* tet Ser · HIP 92946 · θ1 Ser

👁️ Naked-eye

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

Star

Apparent magnitude: 4.57 mag
Parallax: 21.09 mas → about 154.6 light-years away
Spectral type: A5V
Right ascension: 284.0549°
Declination: 4.2036°
Designation: * tet Ser
Bayer designation: θ1 Ser
HIP number: 92946
IAU name adopted: 2016-08-21
Name language: Arabic
Name origin (IAU): From the Arabic word alya, naming the fatty tail of a breed of Eastern sheep. In Early Modern times this word was erroneously proposed as the origin of Alioth, a Medieval Latin name for ε UMa. The erroneous "Alya" was applied as a star name to θ Ser in recent times.

Constellation

Light from this object takes about 155 years to reach Earth — the light you see tonight left around AD 1871 (official distance ÷ speed of light).
At magnitude 4.6 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination 4.2° — 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.