TRAPPIST-1

TRAPPIST-1 — planetary system, shown live in Cosmoscope, a real-time 3D map of the universe.

Seven small planets orbit an ultracool red dwarf in a system compact enough to fit inside Mercury’s orbit. Explore each planet at its measured size. Surface colours, clouds and oceans in these NASA illustrations are hypothetical.

Planets

Seven confirmed, approximately Earth-sized worlds

Distance

40.54 light-years

Star radius

0.1192 × the Sun

Temperature

2,566 K

Data

NASA Exoplanet Archive · Agol et al. 2021

Orbits

Measured sizes, periods and inclinations; circular approximation, illustrative phases and sky orientation

Appearance

NASA artist textures; no planetary surface has been imaged

Seeing TRAPPIST-1 in real time

TRAPPIST-1 is placed at its true position on the sky and at its real measured distance, not as a flat backdrop. Fly out from the Sun in the live 3D view and watch it change from a point of light into structure as you approach, with the scale bar showing just how far out you have travelled.