Koit
XO-4
📋 A written introduction is coming — for now this page shows official values only.
Star
- Apparent magnitude
- 10.78 mag
- Distance from Earth
- 272.655 pc (≈ 889.3 light-years)
- Spectral type
- F5 V
- Surface temperature
- 6,397 K
- Right ascension
- 110.3882°
- Declination
- 58.2681°
- Designation
- XO-4
- IAU name adopted
- 2019-12-17
- Name language
- Estonian
- Name origin (IAU)
- Koit is Estonian for the time when the Sun rises in the morning (dawn).
Source:IAU Working Group on Star Names · checked 2026-11-02 ↗NASA Exoplanet Archive (Caltech/IPAC) · 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 889 years to reach Earth — the light you see tonight left around AD 1137 (official distance ÷ speed of light).
- At magnitude 10.8 it is fainter than the naked-eye limit (about 6) — you need binoculars or a telescope.
- Declination 58.3° — from Seoul (37.6° N) it never sets and circles the northern sky all night.
Worked out from this object's official values.