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WASP-15
Sign in to saveAlso known as Nyamien
WASP-15, also named Nyamien, is a magnitude 11 star located about 935 light-years away in the constellation Centaurus. The star, which is more massive, larger, hotter, and more luminous than the Sun, is also less metal-rich than the Sun. WASP-15 has one known planet in its orbit, WASP-15b; the planet is a hot Jupiter with an anomalously high radius, a phenomenon which may be explained by the presence of an internal heat source. The star was first observed by the SuperWASP program in 2006; future measurements in 2007 and 2008, as well as follow-up observations and analysis, eventually led to th
Astronomical data · SIMBAD
- Object type
- *
- Spectral type
- F7
- Distance
- 935 light-years
- Redshift
- z = -0.000004569817662614106
- Coordinates
- RA 208.9280° · Dec -32.1596°
via SIMBAD · CDS Strasbourg
Wikidata facts
- Distance from Earth
- 325.712
- Radius
- 1.477
- Mass
- 1.18
Show 16 more facts
- spectral class
- F7
- catalog code
- TIC 111991770
- effective temperature
- 6300
- radial velocity
- -1.79
- apparent magnitude
- 10.797681
- parallax
- 3.542
- metallicity
- -0.07
- stellar rotational velocity
- 4.77
- surface gravity
- 14830
- name
- Nyamien
- luminosity
- 2.831101
- right ascension component of proper motion
- 8.723
- declination component of proper motion
- -22.328
- right ascension
- 208.92796674067
- declination
- -32.15961561723
- age estimated by a dating method
- 3.9
via Wikidata · CC0
~4 min read
Article
7 sectionsContents
- Observational history
- Naming
- Characteristics
- Planetary system
- See also
- References
- External links
WASP-15, also named Nyamien, is a magnitude 11 star located about 935 light-years away in the constellation Centaurus. The star, which is more massive, larger, hotter, and more luminous than the Sun, is also less metal-rich than the Sun. WASP-15 has one known planet in its orbit, WASP-15b; the planet is a hot Jupiter with an anomalously high radius, a phenomenon which may be explained by the presence of an internal heat source. The star was first observed by the SuperWASP program in 2006; future measurements in 2007 and 2008, as well as follow-up observations and analysis, eventually led to the discovery of WASP-15b using the transit method and Doppler spectroscopy.
==Observational history== WASP-15 was first observed from the South African Astronomical Observatory, which hosts the planet-searching SuperWASP program in the Southern Hemisphere (WASP-South), and was catalogued by its brightness and its coordinates in the sky. This information was captured first with one camera field between May 4, 2006 and July 17, 2006, and later again using two overlapping camera fields between January 31, 2007 to July 7, 2007 and from January 31, 2008 to May 29, 2008.