AU Mic d · Asteria Star

Scientific overview

AU Mic d is a terrestrial planet orbiting AU Mic, completing an orbit every 13 days, about 32 light-years from Earth. It was discovered in 2023 using the transit timing variations.

Host star

AU Mic

Spectral type

M1 V

Temperature

3,678 K

Mass

0.51 M☉

Planetary system — AU Mic system

View the AU Mic system (4 known planets).

Planet	Class	Radius (R⊕)	Period (d)	Distance (ly)
AU Mic bTransit · 2020	Mini-Neptune	4.79	8.4634	32
AU Mic dTransit Timing Variations · 2023	Terrestrial planet	1.02	12.736	32
AU Mic cTransit · 2021	Mini-Neptune	2.79	18.859	32
AU Mic eRadial Velocity · 2025	Mini-Neptune	4.87	33.11	32

Discovery and detection

Detection method

Transit Timing Variations

Discovery year

2023

Knowledge connections

OrbitsAU Mic
Member of systemAU Mic system
Discovered by methodTransit Timing Variations
Catalogued inNASA Exoplanet Archive

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