HD 209458
22 03 10.7729
+18 53 03.5482
47
1.148
1.146
7.63
8.21
6.591
6.37
6.308
0.02
6075
4
G0V
HD 209458 b
TYC 1688-1821-1 b
Gaia DR2 1779546757669063552 b
HIP 108859 b
Confirmed planets
0.714
1.38
3.52474859
0.04747
0.0004
86.59
2451370.048
transit
14/04/18
1999
By studying the carbon monoxide gas in the upper atmosphere with great accuracy, astronomers found evidence for a wind, blowing at a speed of 5000 to 10000 km per hour.
HD209458
Astronomers have measured a superstorm for the first time in the atmosphere of the planet HD 209458 b. The very high-precision observations of carbon monoxide gas show that it is streaming at enormous speed from the extremely hot day side to the cooler night side of the planet.
This artist's impression shows the Jupiter-like transiting planet around its solar-like host star.
Credit:
ESO/L. Calcada
1316.1
1
HD 209458
TYC 1688-1821-1
Gaia DR2 1779546757669063552
HIP 108859
Pegasus