55 Cancri e (abbreviated 55 Cnc e, also known as Janssen / ˈdʒænsən /) is an exoplanet orbiting a Sun -like host star, 55 Cancri A. The mass of the exoplanet is about eight Earth masses and its diameter is about twice that of the Earth.

Oct 10, 2023 · A Spitzer Space Telescope phase curve of 55 Cancri e reveals a strong dayside (≈2700 K) to nightside (≈1400 K) brightness temperature contrast at 4.5 μm and a 41° ± 12° offset in the peak of its phase curve (Demory et al. 2016b; see also Mercier et al. 2022).

Oct 24, 2024 · 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 discovery was announced in 2004.

The current study explores the possibility of a thin, transient, secondary atmosphere on 55 Cancri e that is sourced by geochemical outgassing. Its transient nature derives from the inability of outgassing to be balanced

Jan 11, 2024 · New Webb data suggests that the hot super-Earth 55 Cancri e has an atmosphere, perhaps maintained by the planet’s magma ocean. One artist's illustration of 55 Cancri e shows a planet covered in lava flows, with only a wisp of rock-vapor for an atmosphere.

Feb 5, 2019 · In addition to a new Exoplanet Travel Bureau poster celebrating a molten world called 55 Cancri e, space fans can enjoy a 360-degree visualization of the surface of the same planet, a multimedia journey into the life and death of planetary systems, and a major update to the popular Eyes on Exoplanets app.

Feb 16, 2016 · This video shows an artist's impression of the super-Earth 55 Cancri e moving in front of its parent star. During these transits astronomers were able to gather information about the atmosphere of the exoplanet.

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Feb 16, 2016 · 55 Cancri e This artist's impression shows the super-Earth 55 Cancri e in front of its parent star. 55 Cancri e is about 40 light-years away and orbits a star slightly smaller, cooler and less-bright than our Sun. As the planet is so close to …

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 degrees Celsius).