Compact Planetary System
This artist’s judgment depicts a heavenly complement so compress that it’s some-more like Jupiter and a moons than a star and a planets. Astronomers regulating information from NASA’s Kepler goal and ground-based telescopes recently reliable that a system, called KOI-961, hosts a 3 smallest exoplanets now famous to circuit a star other than a sun. An exoplanet is a world that resides outward of a solar system.
The star, that is located about 130 light-years divided in a Cygnus constellation, is a red dwarf that is one-sixth a distance of a sun, or only 70 percent bigger than Jupiter. The star is also cooler than a sun, and gives off some-more red light than yellow.
The smallest of a 3 planets, called KOI-961.03, is indeed located a farthest from a star, and is graphic in a foreground. This world is about a distance of Mars, with a radius of 0.57 times that of Earth. The subsequent world to a top right is KOI-961.01, that is 0.78 times a radius of Earth. The world closest to a star is KOI-961.02, with a radius 0.73 times a Earth’s.
All 3 planets whip around a star in reduction than dual days, with a closest world holding reduction than half a day. Their tighten vicinity to a star also means they are boiling hot, with temperatures trimming from 350 to 836 degrees Fahrenheit (176 to 447 degrees Celsius). The star’s habitable zone, or a segment where glass H2O could exist, is located distant over a planets.
The ground-based observations contributing to these discoveries were done with a Palomar Observatory, nearby San Diego, Calif., and a W.M. Keck Observatory atop Mauna Kea in Hawaii.
Image Credit: NASA/JPL-Caltech