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Kepler-1625b is a super-Jupiter exoplanet orbiting the Sun-like star Kepler-1625 about 2,500 parsecs away in the constellation of Cygnus. The large gas giant is approximately the same radius as Jupiter, and orbits its star every 287.4 days. In 2017, hints of a Neptune-sized exomoon in orbit of the planet were found using photometric observations collected by the Kepler Mission. Further evidence for a Neptunian moon was found the following year using the Hubble Space Telescope, where two independent lines of evidence constrained the mass and radius to be Neptune-like. The mass-signature has been independently recovered by two other teams. However, the radius-signature was independently recovered by one of the teams but not the other. The original discovery team later showed that this latter study appears affected by systematic error sources that may have influenced its findings.

Zdroj: Wikipedia · Tento popis je k dispozici pouze anglicky.

NASA: Kepler-1625 b is a Neptune-like exoplanet that orbits a G-type star. Its mass is 30.6 Earths, it takes 287.4 days to complete one orbit of its star, and is 0.87762 AU from its star. Its discovery was announced in 2016.

Soustava

V číslech

Poloměr

0,54 R♃6,1 R⊕

Hmotnost

30,6 M⊕182,75 ×10²⁴ kg

Oběžná doba

287,4 d0,79 let

Vzdálenost od hvězdy

0,878 au131 mil. km

Výstřednost

0téměř kruhová

Rovnovážná teplota

350 K77 °C

Přijímané záření

3 × Země

Vzdálenost od Země

7 535 sv. r.2 310,1 pc

Hustota

0,76 g/cm³0,14 × Země

Zdroje