Star · K1III
Kepler-1004
Kepler-1004 is a giant star of spectral type K1III in the constellation Cygnus, 3,760 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Cygnus |
|---|---|
| Distance | 3,760 light-years (1,153 pc) |
| Apparent magnitude | magnitude 13.71 |
| Absolute magnitude | magnitude 3.40 |
| Spectral type | K1III |
| Surface temperature | 4,970 K |
| Luminosity | 5.17 L☉ |
| Radius | 3.39 R☉ |
| Mass | 1.11 M☉ |
| Age | 7.8 billion years |
| Metallicity [Fe/H] | -0.04 |
| Right ascension (J2000) | 19h 49m 26.2s |
| Declination (J2000) | +49° 47′ 51″ |
| Space velocity (relative to the Sun) | 28.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.71. Visible from the whole Northern Hemisphere and south to latitude 40° S. North of latitude 40° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 1735 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 67 million years.
The Sun seen from there
From a planet around Kepler-1004, the Sun would look like a star of magnitude 15.14, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Planets
- Kepler-1004 b 5.29-day orbit · 6.28 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.