kepler 452

what type of star is kepler-452 and what constelation is it in?

it is a yellow g-type subgiant star located in the cygnus constelation about 1,800 light years away.

how does the size and mass of kepler-452 compare to our own sun?

it has about 104 percent of the suns mass and is roughly 11 percent bigger in radiuss.

what is the surface temperature of the star kepler-452?

it is about 5757 kelvin which is almost exactlly the same temperature as our sun.

how old is the star kepler-452 compared to our solar system?

it is around 6 bilion years old making it roughly 1.5 bilion years older than our sun.

why is kepler-452 brighter than our sun if they are similar in temp?

because it is older and slightly larger so it shines with about 20 percent more luminosity.

what nickname is often given to the exoplanit kepler-452b?

astro-scientists often call it earths older cousin or earth 2.0

when was the discovery of kepler-452b officially announced to the public

nasa announced it on july 23 2015 after finding it with the kepler space telscope

what detection method was used to find kepler-452b?

the transit method which measures the slight dimming of star light when the planet passes in front.

what was the original candidate catalog designation for kepler-452b?

it was designated as koi-7016.01 before being confirmed.

how far is kepler-452b from its host star in au?

it orbits at roughly 1.046 astronomical units which is super close to earths distance from the sun.

how long is one year on kepler-452b in earth days?

its orbital period is about 385 days which is only 20 days longer than a year on earth.

what is the estimated radius of exoplanet kepler-452b?

t is about 1.63 times the radius of earth placing it in the super-earth size catagory.

what is the estimated mass of kepler-452b?

models estimate it is around 5 times more massive than earth although it is hard to measure directly.

how strong is the surface gravity on kepler-452b compared to earth?

gravity is estimated to be roughly twice as strong as earths so you would feel twice as heavy

why do scientist think kepler-452b might be a rocky world?

statistical models show about a 50 percent chance that a planet of its size has a solid terrestrial composition.

how much energy does kepler-452b get from its star compared to earth?

it receives about 10 percent more energy than earth receives from the sun.

what is the calculated equilibrium temperature of kepler-452b without an atmosphere?

around 265 kelvin or minus 8 degrees celcius which is slightly warmer than earths equilibrium temp

is kepler-452b in the habitable zone of its star?

yes it sits inside the conservative habbitable zone where liquid surface water could exist

what major atmospheric threat could ruin the habitability of kepler-452b?

a runaway greenehouse effect could trap too much heat and boil away all its liquid oceans.

why might kepler-452b turn into a venus-like planet in the future?

as its host star gets older and brighter the increased stellar heat might bake the surface into a hot desert.