Formosa
HD 100655 · HIP 56508
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 6.438 mag
- Parallax
- 8.18 mas → about 398.7 light-years away
- Spectral type
- G9III
- Surface temperature
- 4,891 K
- Right ascension
- 173.7656°
- Declination
- 20.4415°
- Designation
- HD 100655
- HIP number
- 56508
- IAU name adopted
- 2019-12-17
- Name language
- Portuguese
- Name origin (IAU)
- Formosa is the historical name of Taiwan used in the 17th century, meaning beautiful in Latin.
Source:IAU Working Group on Star Names · checked 2026-11-02 ↗ESA Hipparcos Catalogue (ESA Gaia Archive) · checked 2026-11-03 ↗NASA Exoplanet Archive (Caltech/IPAC) · checked 2026-11-03 ↗
Related
Constellation
Planets
In everyday life
- Light from this object takes about 399 years to reach Earth — the light you see tonight left around AD 1627 (official distance ÷ speed of light).
- At magnitude 6.4 it is fainter than the naked-eye limit (about 6) — you need binoculars or a telescope.
- Declination 20.4° — 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.