Star · G5 V
HD 190647
HD 190647 is a main-sequence star of spectral type G5 V in the constellation Sagittarius, 177.4 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 99115 |
|---|---|
| Constellation | Sagittarius |
| Distance | 177.4 light-years (54.4 pc) |
| Apparent magnitude | magnitude 7.78 |
| Absolute magnitude | magnitude 4.10 |
| Spectral type | G5 V |
| Surface temperature | 5,660 K |
| Luminosity | 1.98 L☉ |
| Radius | 1.38 R☉ |
| Mass | 1.07 M☉ |
| Age | 8.0 billion years |
| Metallicity [Fe/H] | 0.23 |
| Right ascension (J2000) | 20h 07m 19.7s |
| Declination (J2000) | −35° 32′ 19″ |
| Space velocity (relative to the Sun) | 67.2 km/s |
In the sky
Too faint for the naked eye (magnitude 7.78); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 54° N. South of latitude 54° S 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 1849. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.1 million years.
The Sun seen from there
From a planet around HD 190647, the Sun would look like a star of magnitude 8.51, in the direction where our sky has the constellation Lynx. It would be invisible to the naked eye.
Planets
- HD 190647 b 1,180-day orbit · 13.4 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.