HAT-P-11 b is an exoplanet about the size of Neptune, discovered in 2009 by the HATNet project, a network of small robotic telescopes, as it crossed the face of its star in the constellation Cygnus. The star lies about one hundred and twenty light-years away and is a little smaller and cooler than the Sun. The planet orbits very close to its star in just five days and its orbit is eccentric and steeply tilted, which suggests an unusual history of gravitational interactions. In 2014 astronomers using the Hubble and Spitzer space telescopes found water vapour in its atmosphere, the first such detection on a planet of this size. It is in the field of the Kepler telescope.
Before and after
- 2009Discovery of tennessine
- 2009Rise of effective altruism
- 2009Premiere of As Aventuras de Gui & Estopa
- 2009Establishment of Band-e Amir National Park
- 2 January 2009Discovery of HAT-P-11 b
- 3 January 2009Release of Bitcoin
- 7 January 2009Premiere of Masha and the Bear
- 15 January 2009US Airways Flight 1549
- 20 January 2009First inauguration of Barack Obama
More in Universe & space
- 22 June 1978Discovery of Charon
- 24 April 1990Launch of Hubble Space Telescope
- 1998Supernovae show that cosmic expansion is accelerating
- 20 November 1998Launch of International Space Station
- 10 April 2019The first image of a black hole
- 25 December 2021Launch of James Webb Space Telescope
The era
This moment belongs to the Contemporary world (1945 CE to today), the world since 1945. You can also browse everything in the 21st century.