Star · M1V
KOI-4777
KOI-4777 is a main-sequence star of spectral type M1V in the constellation Lyra, 561.8 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Lyra |
|---|---|
| Distance | 561.8 light-years (172.2 pc) |
| Apparent magnitude | magnitude 16.41 |
| Absolute magnitude | magnitude 10.23 |
| Spectral type | M1V |
| Surface temperature | 3,520 K |
| Luminosity | 0.0229 L☉ |
| Radius | 0.4 R☉ |
| Mass | 0.41 M☉ |
| Age | 4.0 billion years |
| Metallicity [Fe/H] | 0.10 |
| Right ascension (J2000) | 19h 09m 02.9s |
| Declination (J2000) | +42° 01′ 56″ |
| Space velocity (relative to the Sun) | 11.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 16.41. Visible from the whole Northern Hemisphere and south to latitude 48° S. North of latitude 48° 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 1464. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 10.0 million years.
The Sun seen from there
From a planet around KOI-4777, the Sun would look like a star of magnitude 11.01, in the direction where our sky has the constellation Puppis. It would be invisible to the naked eye.
Planets
- KOI-4777.01 0.412-day orbit · 0.51 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.