 Size comparison of WASP-28b with Jupiter. | |
| Discovery[1] | |
|---|---|
| Discovered by | Wide Angle Search for Planets |
| Discovery date | 2010 |
| Transit | |
| Orbital characteristics | |
| 0.0442±0.0010AU | |
| Eccentricity | <0.075[2] |
| 3.40883495±0.00000015[2]d | |
| Inclination | 88.61 ± 0.67[1] |
| Star | WASP-28 |
| Physical characteristics | |
| 1.319+0.028 −0.026[3]RJ | |
| Mass | 0.948+0.051 −0.052[3]MJ |
| Temperature | 1468 ± 37[1]K |
WASP-28b or K2-1b is anextrasolar planet discovered in 2010[4] by theWide Angle Search for Planets (WASP) project orbitingWASP-28, amagnitude 12star also known as 1SWASP J233427.87-013448.1, 2MASS J23342787-0134482 and K2-1.[5][1] Since it orbits its star very closely, the planet is a strongly irradiatedhot Jupiter.[1] As seen from theEarth, WASP-28b transits its host star every 3.41 days taking about 3 hours to do so.[1]
The planet was observed by theKepler space telescope during the K2 mission engineering campaign in February 2014 as part of an early science demonstration.[6] It was also observed from December 2016 to March 2017 during K2's campaign 12 which allowed a refinement of the system parameters.[2]
The planet seems to be a gas giant with a low core mass (<~10M(Earth)) and a low heavy elements content (Z<~0.2).[1]
Media related toWASP-28b at Wikimedia Commons