 An artist's impression of the exoplanet HIP 11915 b. | |
| Discovery | |
|---|---|
| Discovered by | Meléndez et al. |
| Discovery site | La Silla Observatory, Chile |
| Discovery date | July 2015[1] |
| HARPS | |
| Orbital characteristics | |
| 4.8 ± 0.1[2] AU | |
| Eccentricity | 0.1 ± 0.070[2] |
| 3830.0 ± 150[2] d 10.486[2] y | |
| Star | HIP 11915 |
| Physical characteristics | |
| ~1[3] RJ | |
| Mass | 0.99 ± 0.06[2] MJ (314.82 ME) |
| Temperature | 118 K (−155 °C; −247 °F) |
HIP 11915 b is an exoplanet orbiting the solar twin star HIP 11915 about 190 light-years (57 parsecs, or nearly 1.798×1015 km) from Earth in the constellation Cetus. It is notable as the first exoplanet to be discovered with an orbit and mass similar to that of Jupiter (essentially, a "Jupiter analog"), suggesting that its system may be similar to that of the Solar System.[1] It orbits its star at a distance of approximately 4.8 AU.[2] The exoplanet was found by using the radial velocity method, where periodic Doppler shifts of spectral lines of the host star suggest an orbiting object.
- ^ a b "Jupiter Twin Discovered Around Solar Twin". Retrieved 16 July 2015.
- ^ a b c d e f "Planet HIP 11915". Extrasolar Planets Encyclopaedia. Archived from the original on 26 January 2020. Retrieved 17 July 2015.
- ^ "Discovery of Jupiter's twin points to Solar System 2". The Daily Telegraph. 20 July 2015. Retrieved 13 July 2016.
© MMXXIII Rich X Search. We shall prevail. All rights reserved. Rich X Search