Qatar 1b

Qatar-led International Team Finds Their First Alien World

Full Size . Half Size . Credit: David Aguilar, Harvard-Smithsonian Center for Astrophysics.
Further Information .
Preprint submitted to Monthly Notices of the Royal Astronomical Society .

Planet Name: Qatar-1b
Planet Mass = 1.09 +- 0.08 Jupiter masses
Planet Diameter = 1.17 +- 0.06 Jupiter diameters
Planet Temperature = 1380 +- 45 Kelvin (1100 Celsius) (for zero albedo and complete redistribution)

Orbit Period = 1.42004 +- 0.00001 days (34 hours)
Orbit Radius (semi-major axis) = 0.02342 +- 0.00025 AU (1 AU = 93 million miles = Earth-Sun distance)

Star Name = Qatar-1 (also known as 3UC311-087990)
Star Celestial Coordinates: α = 20h 13m 31.61s δ = +65d 09m 43.4s
Star is in the constellation of Draco, the Dragon.
Star Spectral Type = K3V
Star Mass = 0.85 +- 0.03 solar masses
Star Radius = 0.823 +- 0.025 solar radii
Star Temperature = 4900 +- 150 Kelvin
Star Distance = 170 +- 20 pc (550 light years)
(Distance to Moon is 1 light second, to Sun is 8 light minutes)
Age of system = between 4 and 6.4 Gyr (Solar system's age is 5 Gyr)

Alsubai Project Exoplanet Transit Survey.

Qatar Foundation.

SuperWASP Wide Angle Search for Planets .

Scottish Universities Physics Alliance .
St Andrews Astronomy Group .

Keith Horne (kdh1 at st-andrews.ac.uk)