Star · K7V
HATS-77
HATS-77 is a main-sequence star of spectral type K7V in the constellation Antlia, 1,423 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Antlia |
|---|---|
| Distance | 1,423 light-years (436.2 pc) |
| Apparent magnitude | magnitude 16.20 |
| Absolute magnitude | magnitude 8.00 |
| Spectral type | K7V |
| Surface temperature | 4,070 K |
| Luminosity | 0.102 L☉ |
| Radius | 0.643 R☉ |
| Mass | 0.655 M☉ |
| Age | 12.1 billion years |
| Metallicity [Fe/H] | 0.25 |
| Right ascension (J2000) | 9h 59m 17.7s |
| Declination (J2000) | −27° 23′ 34″ |
| Space velocity (relative to the Sun) | 53.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 16.20. Visible from the whole Southern Hemisphere and north to latitude 63° N. South of latitude 63° S it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 603. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 25 million years.
The Sun seen from there
From a planet around HATS-77, the Sun would look like a star of magnitude 13.03, in the direction where our sky has the constellation Pegasus. It would be invisible to the naked eye.
Planets
- HATS-77 b 3.09-day orbit · 13.1 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.