What is the size of 55 Cancri e?
7,422.7 mi
55 Cancri e/Radius
Is 55 Cancri e bigger than Earth?
Twice as big as Earth, the super-Earth 55 Cancri e was thought to have lava flows on its surface. The planet is so close to its star, the same side of the planet always faces the star, such that the planet has permanent day and night sides.
How does the size of Earth and 55 Cancri e compare?
55 Cancri e, also known as Janssen, orbits a star called Copernicus only 41 light years away. 55 Cancri e is a super-Earth exoplanet that orbits a G-type star similar to our Sun. Its mass is 8.08 Earths, it takes 0.7 days to complete one orbit of its star, and is 0.01544 AU from its star.
Is there a planet full of diamonds?
This latest study builds on previous investigations into planets that may be full of diamonds. NASA has taken a closer look at 55 Cancri e, an exoplanet that earned the nickname “diamond planet” due to research that suggests it has a carbon-rich composition.
How close is 55 Cancri to its star?
40.12 light years
55 Cancri/Distance to Earth
Why is 55 Cancri ea super-Earth?
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). For a while it was dubbed the “diamond planet” because scientists suggested that it was composed of diamonds and graphite.
What is 40 light-years away from Earth?
The TRAPPIST-1 system is seven planets, all roughly in Earth’s size range, orbiting a red dwarf star about 40 light-years away.
Can you visit 55 Cancri e?
55 Cancri e was discovered on 30 August 2004. However, until the 2010 observations and recalculations, this planet had been thought to take about 2.8 days to orbit the star. In October 2012, it was announced that 55 Cancri e could be a carbon planet….55 Cancri e.
| Discovery | |
|---|---|
| Surface gravity | 2.273 g |
Does 55 Cancri e have diamonds?
A model of the planet’s interior in 2012 suggested that 55 Cancri e is made up of carbon (principally as diamonds and graphite), as well as iron, silicon carbide and possible silicates.
Does 55 Cancri e have an atmosphere?
Scientists analyzing data collected by NASA’s Spitzer Space Telescope have discovered that a hot super-Earth, which might have flowing lava on its surface, likely has an atmosphere.
Why is 55 called Janssen?
That’s how it got its nickname “Diamond Planet.” But 55 Cancri-e—now named “Janssen” (Thank you International Astronomical Union!) Given Janssen’s surface temperature of 2000 K (1727 C), and its proximity to its host star, the existence of an atmosphere is surprising.
How big is 55 Cancri e compared to Earth?
55 Cancri e is a super Earth exoplanet that orbits a G-type star. Its mass is 8.08 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.
What kind of star is 55 Cancri e?
55 Cancri e is a super-Earth exoplanet that orbits a G-type star similar to our Sun. Its mass is 8.08 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. ‹ Back to list
What makes up the interior of 55 Cancri e?
A model of the planet’s interior in 2012 suggested that 55 Cancri e is made up of carbon (principally as diamonds and graphite), as well as iron, silicon carbide and possible silicates.
What is the minimum mass of 55 Cancri e?
The radial velocity method used to detect 55 Cancri e obtains the minimum mass of 7.8 times that of Earth, or 48% of the mass of Neptune. The transit shows that its inclination is about 83.4 ± 1.7, so the real mass is close to the minimum. 55 Cancri e is also coplanar with b.