Star · G0 V
HAT-P-1
HAT-P-1 is a main-sequence star of spectral type G0 V in the constellation Lacerta, 518.5 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Lacerta |
|---|---|
| Distance | 518.5 light-years (159.0 pc) |
| Apparent magnitude | magnitude 9.83 |
| Absolute magnitude | magnitude 3.82 |
| Spectral type | G0 V |
| Surface temperature | 5,980 K |
| Luminosity | 1.68 L☉ |
| Radius | 1.17 R☉ |
| Mass | 1.15 M☉ |
| Age | 3.6 billion years |
| Metallicity [Fe/H] | 0.13 |
| Right ascension (J2000) | 22h 57m 46.9s |
| Declination (J2000) | +38° 40′ 30″ |
| Space velocity (relative to the Sun) | 39.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.83. Visible from the whole Northern Hemisphere and south to latitude 51° S. North of latitude 51° N it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1507. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 9.2 million years.
The Sun seen from there
From a planet around HAT-P-1, the Sun would look like a star of magnitude 10.84, in the direction where our sky has the constellation Antlia. It would be invisible to the naked eye.
Planets
- HAT-P-1 b 4.47-day orbit · 14.8 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.