Star · K2 V
HD 189733
HD 189733 is a main-sequence star of spectral type K2 V in the constellation Vulpecula, 64.5 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | GJ 4130 · HIP 98505 |
|---|---|
| Constellation | Vulpecula |
| Distance | 64.5 light-years (19.8 pc) |
| Apparent magnitude | magnitude 7.67 |
| Absolute magnitude | magnitude 6.19 |
| Spectral type | K2 V |
| Surface temperature | 5,050 K |
| Luminosity | 0.346 L☉ |
| Radius | 0.75 R☉ |
| Mass | 0.79 M☉ |
| Age | 1.4 billion years |
| Metallicity [Fe/H] | -0.02 |
| Right ascension (J2000) | 20h 00m 43.7s |
| Declination (J2000) | +22° 42′ 39″ |
| Space velocity (relative to the Sun) | 23.6 km/s |
In the sky
Too faint for the naked eye (magnitude 7.67); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 67° S. North of latitude 67° 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 the year 1961. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.1 million years.
The Sun seen from there
From a planet around HD 189733, the Sun would look like a star of magnitude 6.31, in the direction where our sky has the constellation Puppis. It would be visible to the naked eye.
Planets
- HD 189733 b 2.22-day orbit · 12.7 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.