Star · G0
HAT-P-66
HAT-P-66 is a main-sequence star of spectral type G0 in the constellation Ursa Major, 3,051 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Ursa Major |
|---|---|
| Distance | 3,051 light-years (935.5 pc) |
| Apparent magnitude | magnitude 13.01 |
| Absolute magnitude | magnitude 3.15 |
| Spectral type | G0 |
| Surface temperature | 6,000 K |
| Luminosity | 4.12 L☉ |
| Radius | 1.88 R☉ |
| Mass | 1.26 M☉ |
| Age | 4.7 billion years |
| Metallicity [Fe/H] | 0.04 |
| Right ascension (J2000) | 10h 02m 17.4s |
| Declination (J2000) | +53° 57′ 03″ |
| Space velocity (relative to the Sun) | 79.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.01. Visible from the whole Northern Hemisphere and south to latitude 36° S. North of latitude 36° N 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 1026 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 54 million years.
The Sun seen from there
From a planet around HAT-P-66, the Sun would look like a star of magnitude 14.69, in the direction where our sky has the constellation Indus. It would be invisible to the naked eye.
Planets
- HAT-P-66 b 2.97-day orbit · 17.8 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.