GJ 1252 is a

red dwarf ''Red Dwarf'' is a British science fiction comedy franchise created by Rob Grant and Doug Naylor, which primarily consists of a television sitcom that aired on BBC Two between 1988 and 1999, and on Dave since 2009, gaining a cult following. T ...

star located away from the Solar System in the constellation of Telescopium. The star has about 38% the mass and 39% the radius of the Sun, and a temperature of about . GJ 1252 is orbited by one known

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 ...

Planetary system

GJ 1252 was found to have a planet, GJ 1252 b, in 2019 using transit observations from TESS. It is a terrestrial planet larger than Earth, with about 1.3 times the mass and 1.18 times the radius of Earth. Orbiting its star with a very short period of just 12.4 hours, it is presumably tidally locked.

Secondary eclipse A binary star is a system of two stars that are gravitationally bound to and in orbit around each other. Binary stars in the night sky that are seen as a single object to the naked eye are often resolved using a telescope as separate stars, in wh ...

observations have shown that GJ 1252 b lacks a significant atmosphere, similar to

LHS 3844 b LHS 3844 b, formally named Kua'kua, is an exoplanet orbiting the red dwarf LHS 3844, about away in the constellation Indus (constellation), Indus, discovered using the Transiting Exoplanet Survey Satellite. It orbits its parent star once every 1 ...

and

TRAPPIST-1b TRAPPIST-1b, also designated as 2MASS J23062928-0502285 b, is a mainly rocky, Venus-like exoplanet orbiting around the ultra-cool dwarf star TRAPPIST-1, located approximately away from Earth in the constellation of Aquarius. The planet was dete ...

, and have measured its dayside temperature at about .

References

{{Telescopium Telescopium M-type main-sequence stars Planetary systems with one confirmed planet 1252

1078 Year 1078 ( MLXXVIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. Events By place Byzantine Empire * Spring – Nikephoros Botaneiates, a Byzantine general (''strategos'') o ...

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