Signature of a Carbon-Rich Planet · NASA · NASA — public domain
WASP-12b
Sign in to saveAlso known as TOI-1725.01, TIC 86396382b
WASP-12b is a hot Jupiter (a class of extrasolar planets) orbiting the star WASP-12, discovered in April of 2008, by the SuperWASP planetary transit survey. The planet takes only a little over one Earth day to orbit its star, in contrast to about 365.25 days for the Earth to orbit the Sun. Its distance from the star (approximately ) is only \textstyle\frac{1}{43} the Earth's distance from the Sun, with an eccentricity the same as Jupiter's. Consequently, it has one of the lowest densities for exoplanets ("inflated" by the flux of energy from the star). On December 3, 2013, scientists working w
Astronomical data · SIMBAD
- Object type
- Pl
- Distance
- 1,347 light-years
- Coordinates
- RA 97.6367° · Dec 29.6723°
via SIMBAD · CDS Strasbourg
Key facts
- Planet.name
- WASP-12b
- Planet.image
- Exoplanet Comparison WASP-12 b.png
- Planet.caption
- Size comparison of WASP-12b (right) with Jupiter
- Planet.discoverer
- Cameron et al. (SuperWASP)
- Planet.discovery_site
- SAAO
- Planet.discovered
- April 2008
- Planet.discovery_method
- Transit
- Planet.apsis
- astron
- Planet.eccentricity
- 0.049 ± 0.015
- Planet.star
- WASP-12
- Planet.surface_grav
- g
- Planet.single_temperature
- (, )
via Wikipedia infobox
Wikidata facts
- Instance of
- hot Jupiter
- Constellation
- Auriga
- Parent body
- WASP-12
- Radius
- 1.9
- Mass
- 1.47
- Orbital period
- 1.091419179
- Image
- WASP-12b (NASA).jpg
Show 17 more facts
- time of discovery or invention
- 2009-03-00
- Commons category
- WASP-12 b
- spectral class
- G0
- catalog code
- TIC 86396382b
- discovery method
- transit method
- epoch
- J2000.0
- M sin i
- 1.46
- orbital eccentricity
- 0.05
- orbital inclination
- 83.37
- semi-major axis of an orbit
- 0.02344
- declination component of proper motion
- -6.761
- parallax
- 2.4213
- right ascension component of proper motion
- -1.519
- argument of periapsis
- -74
- right ascension
- 97.63665253847999
- declination
- 29.67229541735001
- albedo
- 0.086
via Wikidata · CC0
~7 min read
Encyclopedic overview
7 sectionsContents
- Characteristics
- Orbit
- Carbon content
- Candidate satellite
- See also
- References
- External links
WASP-12b is a hot Jupiter (a class of extrasolar planets) orbiting the star WASP-12, discovered in April of 2008, by the SuperWASP planetary transit survey. The planet takes only a little over one Earth day to orbit its star, in contrast to about 365.25 days for the Earth to orbit the Sun. Its distance from the star (approximately ) is only \textstyle\frac{1}{43} the Earth's distance from the Sun, with an eccentricity the same as Jupiter's. Consequently, it has one of the lowest densities for exoplanets ("inflated" by the flux of energy from the star). On December 3, 2013, scientists working with the Hubble Space Telescope (HST) reported detecting water in the atmosphere of the exoplanet. In July 2014, NASA announced finding very dry atmospheres on three exoplanets (HD 189733b, HD 209458b, WASP-12b) orbiting sun-like stars.
In September 2017, researchers working on the HST announced that WASP-12b reflects just 6% of the light that shines on its surface. As a result, its reflectivity has been described as "black as asphalt" and as "pitch black", although it is so hot that it emits a reddish glow.
Excerpted from Wikipedia’s “WASP-12b” article, available under the CC BY-SA 4.0 licence.