Star · K1 V
HD 2638
HD 2638 is a main-sequence star of spectral type K1 V in the constellation Cetus, 178.4 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 2350 |
|---|---|
| Constellation | Cetus |
| Distance | 178.4 light-years (54.7 pc) |
| Apparent magnitude | magnitude 9.44 |
| Absolute magnitude | magnitude 5.75 |
| Spectral type | K1 V |
| Surface temperature | 5,190 K |
| Luminosity | 0.468 L☉ |
| Radius | 0.94 R☉ |
| Mass | 0.77 M☉ |
| Age | 3.0 billion years |
| Metallicity [Fe/H] | 0.13 |
| Right ascension (J2000) | 0h 29m 59.9s |
| Declination (J2000) | −5° 45′ 50″ |
| Space velocity (relative to the Sun) | 65.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.44. Visible from the whole Southern Hemisphere and north to latitude 84° N. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1848. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.2 million years.
The Sun seen from there
From a planet around HD 2638, the Sun would look like a star of magnitude 8.52, in the direction where our sky has the constellation Virgo. It would be invisible to the naked eye.
Planets
- HD 2638 b 3.44-day orbit · 14.3 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 2292 1.00 light-years
- HIP 2143 7.47 light-years
- TOI-2406 9.05 light-years
- SDSS J002611.45-094341.1 14.2 light-years
- HIP 1866 16.6 light-years
- 14 Cet 19.5 light-years
- HIP 3531 19.5 light-years
- HIP 2786 19.5 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.