WASP-72 (also known as CD-30 1019) is the primary of a binary star system. It is an F7 class dwarf star, with an internal structure just on the verge of the

Kraft break In astronomy, the Kraft break refers to the abrupt decrease in star A star is an astronomical object comprising a luminous spheroid of plasma (physics), plasma held together by its gravity. The List of nearest stars and brown dwarfs, nearest ...

. It is orbited by a planet WASP-72b. The age of WASP-72 is younger than the Sun at 3.55 billion years. The primary seems to have UV-opaque matter in the line-of-sight, which may originate from atmosphere escaping from WASP-72b or from an unknown object in the

interstellar medium In astronomy, the interstellar medium is the matter and radiation that exist in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstella ...

. WASP-72 was named Diya in 2019. A faint stellar companion WASP-72B was discovered in 2020 at a projected separation of 281 AU. It may still be a false positive, with a probability of 0.02%.

Planetary system

The transiting

hot Jupiter Hot Jupiters (sometimes called hot Saturns) are a class of gas giant exoplanets that are inferred to be physically similar to Jupiter but that have very short orbital periods (). The close proximity to their stars and high surface-atmosphere temp ...

exoplanet An exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917 but was not recognized as such. The first confirmation of detection occurred in 1992. A different planet, init ...

orbiting WASP-72 was discovered by

WASP A wasp is any insect of the narrow-waisted suborder Apocrita of the order Hymenoptera which is neither a bee nor an ant; this excludes the broad-waisted sawflies (Symphyta), which look somewhat like wasps, but are in a separate suborder. Th ...

in 2012. The planetary orbit is well aligned to the equatorial plane of the star, with misalignment equal to . Despite the close proximity of the planet to the parent star, orbital decay was not detected as of 2020. The planetary equilibrium temperature is 2210 K, compatible with the measured dayside temperature of 2098 K. WASP-72b was named "Cuptor" in 2019 by

Mauritian Mauritians (singular Mauritian; french: Mauricien; Creole: ''Morisien'') are nationals or natives of the Republic of Mauritius and their descendants. Mauritius is a multi-ethnic society, with notable groups of people of South Asian (notably I ...

amateur astronomers as part of the NameExoWorlds contest.

References

{{DEFAULTSORT:WASP-72 F-type main-sequence stars Planetary systems with one confirmed planet Binary stars Planetary transit variables Fornax (constellation) J02440959-3010085 Durchmusterung objects