Apdu

HR 664 · HIP 10670 · γ Tri

👁️ Naked-eye

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

Star

Apparent magnitude: 4 mag
Parallax: 29.04 mas → about 112.3 light-years away
Spectral type: A1Vnn
Right ascension: 34.3286°
Declination: 33.8472°
Designation: HR 664
Bayer designation: γ Tri
HIP number: 10670
IAU name adopted: 2025-11-13
Name language: Egyptian
Name origin (IAU): Apd(w), ȝpd, The Bird, is an ancient Egyptian constellation from the second millennium BCE; the language is moribunt. There are at least 21 spelling variants throughout the millennia in hierglyphs, and it is probably not any specific bird; might be a goose or falcon or something else. Four star names within the constellation are attested in Ramesside Star Clocks and identified with the area between α, β Per and all of Triangulum. WGSN adopts the name of the constellation for any unspecific spot within its area to preserve an old Egyptian cultural name.

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 4 it is bright enough for the naked eye (limit about 6) — look from somewhere dark.
Declination 33.8° — 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.