The Pi² of the Big Dipper b is an exoplanet in orbit around the Pi² of the Big Dipper , approximately 252 light-years away in the constellation of the Big Dipper . The minimum mass of the planet is estimated at 7 Jupiter . The planet rotates at a distance of 0.87 a.e from a star in an orbit with a large eccentricity . [2]
| U2 Big Dipper b | |
|---|---|
| Exoplanet | |
| Parent star | |
| Star | U2 Big Dipper |
| Orbit elements | |
| Semi-axis ( a ) | 0.87 ± 0.04 [1] a. e. |
| Eccentricity ( e ) | 0.432 ± 0.024 [1] |
| Orbital period ( P ) | 269.3 ± 1.96 [1] d. |
| physical characteristics | |
| Minimum mass ( m sin i ) | 7.1 ± 1.6 [1] M J |
| Radius ( r ) | ? R j |
| Opening Information | |
| opening date | March 28, 2007 |
| Discoverer (s) | Doellinger |
| Detection method | Doppler spectroscopy |
References
- 2 1 2 3 4 van Leeuwen, F. Validation of the new Hipparcos reduction (Eng.) // Astronomy and Astrophysics . - EDP Sciences , 2007. - Vol. 474 , no. 2 - P. 653-664 . - DOI : 10.1051 / 0004-6361: 20078357 . - . - arXiv : 0708.1752 . Vizier catalog entry
- ↑ Döllinger, MP; Hatzes, AP; Pasquini, L .; Guenther, EW; Hartmann, M .; Girardi, L .; Esposito, M. Discovery of the planet around the giant star 4 Ursae Majoris (Eng.) // Astronomy and Astrophysics : journal. - EDP Sciences , 2007. - Vol. 472 , no. 2 - P. 649-652 . - DOI : 10.1051 / 0004-6361: 20066987 . - . - arXiv : astro-ph / 0703672 .
Links
- Jean Schneider. Notes for planet 4 Uma b . Extrasolar Planets Encyclopaedia (2011). The appeal date is October 3, 2011.