WASP-50 is a star that is located in the constellation Eridanus at a distance of approximately 750 light years from us. At least one planet orbits a star.
| Wasp-50 | |||
|---|---|---|---|
| Star | |||
 WASP-50 as presented by the artist. | |||
| Research history | |||
| Discoverer | Hipparcos | ||
| opening date | 1997 | ||
| Observational data ( Age J2000.0 ) | |||
| Type of | Single star | ||
| Right ascension | |||
| Declination | |||
| Distance | 750 St. years (230 pc ) [1] | ||
| Visible magnitude ( V ) | 11.6 [1] | ||
| Constellation | Eridan | ||
| Astrometry | |||
| Own movement (μ) | RA: 4.1 [2] Dec: 7.5 [2] | ||
| Specifications | |||
| Spectral class | G9V [1] | ||
| physical characteristics | |||
| Weight | 0.91 ± 0.07 [1] M ☉ | ||
| Radius | 0.88 ± 0.11 [1] R ☉ | ||
| Age | 7 ± 3.5 billion [1] years | ||
| Temperature | 5400 ± 100 [1] K | ||
| Metallicity | [Fe / H] = - 0.12 ± 0.08 [1] | ||
| Rotation | 2.6 ± 0.5 [1] | ||
| |||
| Database Information | |||
| SIMBAD | data | ||
| Sources: [2] | |||
Content
Features
The WASP-50 was discovered using the Hipparcos orbital observatory during the Tycho project. The official opening of the star was made in 1997 as part of the publication of the Tycho catalog. The star name in this catalog is TYC 5290-462-1 . At present, the WASP-50 name given by a team of researchers from the SuperWASP project is more common .
WASP-50 in its characteristics is very similar to our Sun. This is a yellow dwarf with moderate chromospheric activity, the mass and radius of which are 91% and 88% of the sun, respectively. [1] The surface temperature of the star is about 5400 Kelvin . The age of the star is estimated at approximately 7 billion years.
Planet System
In 2011, a group of astronomers working as part of the SuperWASP program announced the discovery [1] of the planet WASP-50 b in the system. This is a typical hot Jupiter , turning close to its parent star - at a distance of 0.029 AU The mass and size of the planet is only slightly larger than the Jupiter ones . The discovery of the planet was accomplished by the transit method .
| Planet | Weight ( M J ) | Radius ( R J ) | Circulation period ( days ) | Semimajor axis orbits ( a.u. ) | Eccentricity orbits |
|---|---|---|---|---|---|
| b | 1.47 ± 0.09 | 1.15 ± 0.05 | 1,955 | 0,029 | 0.009 ± 0.011 |
Notes
- ↑ 1 2 3 4 5 6 7 8 9 10 11 M. Gillon, AP Doyle, M. Lendl, PFL Maxted, AHMJ Triaud, DR Anderson, SCC Barros, J. Bento, A. Collier-Cameron, B. Enoch, F Faedi, C. Hellier, E. Jehin, P. Magain, J. Montalban, F. Pepe, D. Pollacco, D. Queloz, B. Smalley, D. Segransan, AMS Smith, J. Southworth, S. Udry, RG West, PJ Wheatley. WASP-50b: a hot Jupiter transiting a moderately active solar-type star . Arxiv.org (12 Aug 2011). Date of treatment September 24, 2011. Archived on August 29, 2012.
- ↑ 1 2 3 SIMBAD - WASP-50 in the SIMBAD database . Date of appeal September 24, 2011.
See also
- List of stars of the constellation Eridanus