Star · K5I
TYC 3667-1280-1
TYC 3667-1280-1 is a supergiant star of spectral type K5I in the constellation Cassiopeia, 1,569 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Cassiopeia |
|---|---|
| Distance | 1,569 light-years (481.1 pc) |
| Apparent magnitude | magnitude 9.97 |
| Absolute magnitude | magnitude 1.56 |
| Spectral type | K5I |
| Surface temperature | 5,130 K |
| Luminosity | 24 L☉ |
| Radius | 6.26 R☉ |
| Mass | 1.87 M☉ |
| Age | 1.4 billion years |
| Metallicity [Fe/H] | -0.08 |
| Right ascension (J2000) | 0h 51m 33.0s |
| Declination (J2000) | +58° 25′ 34″ |
| Space velocity (relative to the Sun) | 61.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.97. Visible from the whole Northern Hemisphere and south to latitude 32° S. North of latitude 32° N it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 457. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 28 million years.
The Sun seen from there
From a planet around TYC 3667-1280-1, the Sun would look like a star of magnitude 13.24, in the direction where our sky has the constellation Crux. It would be invisible to the naked eye.
Planets
- TYC 3667-1280-1 b 26.5-day orbit · 12.8 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.