This artist's illustration shows a view of the gas giant planet HD 209458b, as seen from the surface of a hypothetical nearby companion object. The planet is orbiting so close to its sunlike star that its heated atmosphere is escaping into space. Spectroscopic observations by the new Cosmic Origins Spectrograph (COS) aboard the Hubble Space Telescope suggest that powerful stellar winds are sweeping the castoff material behind the scorched planet and shaping it into a comet-like tail.
Credits
Artwork: NASA, ESA, and G. Bacon (STScI);Science: J. Linsky (University of Colorado, Boulder, Colo.)
| About The Object | |
|---|---|
| Object Name | HD 209458, HD 209458b |
| Object Description | Star with Planet |
| R.A. Position | 22h 03m 10s.78 |
| Dec. Position | +18° 53' 03".7 |
| Constellation | Pegasus |
| Distance | About 153 light-years (47 parsecs) |
| About The Data | |
| Data Description | The data used for the science results include the HST proposal : J. Green, C. Froning, J. Linsky, J. Stocke, and K. France (University of Colorado, Boulder). |
| Instrument | HST>COS |
| Exposure Dates | September and October 2009, Exposure Time: 14.2 hours |
| Filters | G130M (UV) and G160M (UV) |
| About The Object | |
|---|---|
| Object Name | A name or catalog number that astronomers use to identify an astronomical object. |
| Object Description | The type of astronomical object. |
| R.A. Position | Right ascension – analogous to longitude – is one component of an object's position. |
| Dec. Position | Declination – analogous to latitude – is one component of an object's position. |
| Constellation | One of 88 recognized regions of the celestial sphere in which the object appears. |
| Distance | The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs. |
| Dimensions | The physical size of the object or the apparent angle it subtends on the sky. |
| About The Data | |
| Data Description |
|
| Instrument | The science instrument used to produce the data. |
| Exposure Dates | The date(s) that the telescope made its observations and the total exposure time. |
| Filters | The camera filters that were used in the science observations. |
| About The Image | |
| Image Credit | The primary individuals and institutions responsible for the content. |
| Publication Date | The date and time the release content became public. |
| Color Info | A brief description of the methods used to convert telescope data into the color image being presented. |
| Orientation | The rotation of the image on the sky with respect to the north pole of the celestial sphere. |
