55 Cancri e (abbreviated 55 Cnc e, also known as Janssen / ˈ dʒ æ n s ən /) is an exoplanet orbiting a Sun-like host star, 55 Cancri A. The mass of the exoplanet is about eight Earth …

Mar 28, 2025 · 55 Cancri e is a super Earth exoplanet that orbits a K-type star. Its mass is 7.99 Earths, it takes 0.7 days to complete one orbit of its star, and is 0.01544 AU from its star. Its …

55 Cancri is a binary star system located 41 [1] light-years away from the Sun in the zodiac constellation of Cancer. It has the Bayer designation Rho1 Cancri (ρ 1 Cancri); 55 Cancri is …

May 8, 2024 · 55 Cancri e is a super-Earth planet that appears composed of diamond-like carbon — now, thanks to the JWST, astronomers have found the world has "grown" a second …

Feb 5, 2019 · Seen as a massive fiery orb on the horizon, the planet's star is 65 times closer to 55 Cancri e than the Sun is to Earth. On the planet's cooler nightside, silicate vapor in the …

Jul 28, 2017 · 55 Cancri e is a super-Earth — about twice our planet's size — that zooms around its star in 18 days. It has a surface temperature of nearly 4,900 degrees Fahrenheit (2,700 …

Apr 29, 2011 · The planet, named 55 Cancri e, is 60 per cent larger in diameter than Earth but eight times as massive. Twice as dense as Earth–almost as dense as lead–it is the densest …

Dec 8, 2022 · The exoplanet Janssen (left), also known as 55 Cancri e, is a scorching hot exoplanet that zips around its host star every 17.5 hours.

Mar 26, 2025 · Recent JWST observations with NIRCam and MIRI of the ultra-short-period super-Earth 55 Cancri e indicate a possible volatile atmosphere surrounding the planet. Previous …

May 22, 2015 · The 55 Cancri system already contains several planets, such as 55 Canc c and 55 Canc f, which have masses similar to Neptune or Uranus. Thus, 55 Canc e may potentially …