Star · G2V
KMT-2017-BLG-0428L
KMT-2017-BLG-0428L is a main-sequence star of spectral type G2V in the constellation Sagittarius, 17,600 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Sagittarius |
|---|---|
| Distance | 17,600 light-years (5,400 pc) |
| Apparent magnitude | magnitude 25.60 |
| Absolute magnitude | magnitude 11.94 |
| Spectral type | G2V |
| Surface temperature | 5,780 K |
| Luminosity | 0.00156 L☉ |
| Radius | 0.0394 R☉ |
| Mass | 0.34 M☉ (estimated) |
| Right ascension (J2000) | 18h 05m 32.5s |
| Declination (J2000) | −28° 29′ 25″ |
In the sky
A telescope is needed to see it: its apparent magnitude is 25.60. Visible from the whole Southern Hemisphere and north to latitude 62° N. South of latitude 62° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 18 thousand years ago. At that time Homo sapiens was spreading out of Africa; there was no farming yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 312 million years.
The Sun seen from there
From a planet around KMT-2017-BLG-0428L, the Sun would look like a star of magnitude 18.49, in the direction where our sky has the constellation Auriga. It would be invisible to the naked eye.
Planets
- KMT-2017-BLG-0428L b 2.23 R⊕
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.