HAT-P-1b
Sign in to saveHAT-P-1b is an extrasolar planet orbiting the Sun-like star HAT-P-1, also known as ADS 16402 B. HAT-P-1 is the dimmer component of the ADS 16402 binary star system. It is located roughly 521 light years away from Earth in the constellation Lacerta. HAT-P-1b is among the least dense of any of the known extrasolar planets.
Key facts
- Planet.name
- HAT-P-1 b
- Planet.image
- Exoplanet Comparison HAT-P-1 b.png
- Planet.caption
- Size comparison of HAT-P-1b with Jupiter.
- Planet.discoverer
- HATNet Project
- Planet.discovery_site
- Arizona and Hawaii
- Planet.discovered
- Thurs, Sept 14, 2006
- Planet.discovery_method
- Transit, radial velocity
- Planet.apsis
- astron
- Planet.eccentricity
- <0.067
- Planet.period
- 4.4652968 ± 0.0000018 d
- Planet.inclination
- 85.634 ± 0.056
- Planet.semi amplitude
- 59.3 ± 1.4
- Planet.star
- HAT-P-1 (ADS 16402 B)
- Planet.mean_radius
- 1.319 ± 0.019
- Planet.mass
- 0.529 ± 0.020
- Planet.single_temperature
- 1322 ± 15 K
via Wikipedia infobox
Article
6 sectionsContents
- Discovery
- Orbit and mass
- Rotation
- Characteristics
- References
- External links
HAT-P-1b is an extrasolar planet orbiting the Sun-like star HAT-P-1, also known as ADS 16402 B. HAT-P-1 is the dimmer component of the ADS 16402 binary star system. It is located roughly 521 light years away from Earth in the constellation Lacerta. HAT-P-1b is among the least dense of any of the known extrasolar planets.
==Discovery== HAT-P-1b was detected by searching for astronomical transits of the parent star by orbiting planets. As the planet passes in front of its parent star (as seen from Earth), it blocks a small amount of the light reaching us from the star. HAT-P-1b was first detected by a dip of 0.6% in the light from the star. This enabled determination of the planet's radius and orbital period. The discovery was made by the HATNet Project (Hungarian Automated Telescope Network) using telescopes at the Fred Lawrence Whipple Observatory on Mount Hopkins in Arizona and at the Submillimeter Array facility in Hawaii. It was confirmed and the orbital parameters determined by radial velocity measurements made at the 8.2 m Subaru and 10 m Keck telescopes, the discovery announcement being made on September 14, 2006.