PIA22096: TRAPPIST-1 Compared to Jovian Moons and Inner Solar System - Updated Feb. 2018


TRAPPIST-1 Compared to Jovian Moons and Inner Solar System - Updated Feb. 2018

Caption:

All seven planets discovered in orbit around the red dwarf star TRAPPIST-1 could easily fit inside the orbit of Mercury, the innermost planet of our solar system. In fact, they would have room to spare. TRAPPIST-1 also is only a fraction of the size of our Sun; it isn't much larger than Jupiter. So, the TRAPPIST-1 system's proportions look more like Jupiter and its moons than those of our solar system.

The seven planets of TRAPPIST-1 are all Earth-sized and terrestrial. TRAPPIST-1 is an ultra-cool dwarf star in the constellation Aquarius, and its planets orbit very close to it.

This image is an update to PIA21428 , based on more precise measurements of the planets' densities, as of February 2018.

For additional information about the Spitzer mission, visit http://www.nasa.gov/spitzer and http://spitzer.caltech.edu .

For additional information on the Kepler and the K2 mission, visit www.nasa.gov/Kepler .

Background Info:

NASA's Jet Propulsion Laboratory, Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate, Washington. Science operations are conducted at the Spitzer Science Center at Caltech, also in Pasadena. Spacecraft operations are based at Lockheed Martin Space Systems Company, Littleton, Colorado. Data are archived at the Infrared Science Archive housed at Caltech/IPAC. Caltech manages JPL for NASA.

For additional information about exoplanets, visit https://exoplanets.nasa.gov/ .

Cataloging Keywords:

Name Value Additional Values
Target Jupiter Earth, Mercury, Sun
System Jupiter Earth
Target Type Planet Earth, Sun
Mission Transiting Planets and Planetesimals Small Telescope (TRAPPIST) Spitzer Space Telescope
Instrument Host Transiting Planets and Planetesimals Small Telescope (TRAPPIST)
Host Type
Instrument Transiting Planets and Planetesimals Small Telescope (TRAPPIST)
Detector
Extra Keywords Color, Infrared
Acquisition Date
Release Date 2018-02-05
Date in Caption
Image Credit NASA/JPL-Caltech
Source photojournal.jpl.nasa.gov/catalog/PIA22096
Identifier PIA22096