Star · M1.5
Kaewkosin
Kaewkosin is a main-sequence star of spectral type M1.5 in the constellation Cancer, 95.9 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | GJ 3470 |
|---|---|
| Constellation | Cancer |
| Distance | 95.9 light-years (29.4 pc) |
| Apparent magnitude | magnitude 12.33 |
| Absolute magnitude | magnitude 9.99 |
| Spectral type | M1.5 |
| Surface temperature | 3,600 K |
| Luminosity | 0.029 L☉ |
| Radius | 0.547 R☉ |
| Mass | 0.539 M☉ |
| Age | 1.7 billion years |
| Metallicity [Fe/H] | 0.20 |
| Right ascension (J2000) | 7h 59m 06.3s |
| Declination (J2000) | +15° 23′ 33″ |
| Space velocity (relative to the Sun) | 27.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.33. Visible from the whole Northern Hemisphere and south to latitude 75° S. North of latitude 75° N it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1930. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.7 million years.
The Sun seen from there
From a planet around Kaewkosin, the Sun would look like a star of magnitude 7.17, in the direction where our sky has the constellation Sagittarius. It would be invisible to the naked eye.
Planets
- GJ 3470 b 3.34-day orbit · 4.57 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3469B 5.53 light-years
- GJ 3468A 5.80 light-years
- SDSS J074838.61+174332.9 6.11 light-years
- 2MASSI J0756252+124456 7.02 light-years
- SDSS J081110.35+185527.9 7.77 light-years
- HIP 38992 10.2 light-years
- HIP 39506 10.7 light-years
- WISEA J075438.20+090044.9 11.5 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.