Registry · exoplanet

AU Mic d

Exoplanet

harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.

Right ascension: 20h 45m 09.87s
Declination: −31° 20′ 32.8″
Galactic l, b: 12.653, -36.8
Magnitude V: 8.81
Distance: 9.7221 pc

Planet

NASA Exoplanet Archive, composite parameters

Host star	AU Mic · M1 V
Discovery	Transit Timing Variations, 2023 · Multiple Observatories
Orbital period	12.736 d
Semi-major axis	— au
Eccentricity	0.00305
Radius	1.02 R⊕ · 0.0912 R♃
Mass	1.053 M⊕ · 0.00331 M♃
Density	5.45 g/cm³
Equilibrium temperature	— K
System distance	9.7221 pc

Recorded parameters

3 quantities with a single published value

Parameter	Value	Unit	Uncertainty	As published	Source	Reference
Mass	1.053	M_earth	± 0.511	Transit Timing Variations	NASA Exoplanet Archive	Wittrock et al. 2023
Orbital period	12.73596	d	± 0.00793	Transit Timing Variations	NASA Exoplanet Archive	Wittrock et al. 2023
Eccentricity	0.00305		± 0.00104	Transit Timing Variations	NASA Exoplanet Archive	Wittrock et al. 2023

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
AU Mic c	Exoplanet	0″	8.81
AU Mic e	Exoplanet	0″	8.81
AU Mic	Star	0″	—
AU Mic b	Exoplanet	0″	8.81
HD 197481c	Planet	7.083″	—
HD 197481b	Planet	7.083″	—
HD 197481d	Planet Candidate	7.083″	—
HD 197481	BYDraV*	7.083″	8.627
UCAC4 294-224020	HighPM*	433.3″	13.02

Provenance

where this card came from

Archive	Read at (UTC)	Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/au-mic-d · Registry entry updated 2026-08-14.