Registry · deep sky

AU Mic

Star M1 V

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
Distance: 9.7221 pc

Published measurements

3 quantities measured more than once

One object can carry a dozen published estimates of the same quantity. The register keeps them side by side rather than picking a winner — the citation is part of the value.

Mass 9 values

Value	Unit	Uncertainty	Source	Reference	Year
0.635	M_sun	± 0.04	NASA Exoplanet Archive	Mallorquín et al. 2024	2024
0.6	M_sun	± 0.04	NASA Exoplanet Archive	Donati et al. 2023	2023
0.51	M_sun	± 0.028	NASA Exoplanet Archive	Wittrock et al. 2023	2023
0.5	M_sun	± 0.03	NASA Exoplanet Archive	Zicher et al. 2022	2022
0.56	M_sun	± 0.06	NASA Exoplanet Archive	Szabó et al. 2021	2021
0.5	M_sun	± 0.03	NASA Exoplanet Archive	Martioli et al. 2021	2021
0.5	M_sun	± 0.03	NASA Exoplanet Archive	Klein et al. 2021	2021
0.5	M_sun	± 0.03	NASA Exoplanet Archive	Cale et al. 2021	2021
0.5	M_sun	± 0.03	NASA Exoplanet Archive	Plavchan et al. 2020	2020

Radius 10 values

Value	Unit	Uncertainty	Source	Reference	Year
0.862	R_sun	± 0.052	NASA Exoplanet Archive	Mallorquín et al. 2024	2024
0.82	R_sun	± 0.02	NASA Exoplanet Archive	Donati et al. 2023	2023
0.744	R_sun	± 0.023	NASA Exoplanet Archive	Wittrock et al. 2023	2023
0.75	R_sun	± 0.03	NASA Exoplanet Archive	Zicher et al. 2022	2022
0.75	R_sun	± 0.029	NASA Exoplanet Archive	Gilbert et al. 2022	2022
0.75	R_sun	± 0.03	NASA Exoplanet Archive	Szabó et al. 2021	2021
0.75	R_sun	± 0.03	NASA Exoplanet Archive	Martioli et al. 2021	2021
0.75	R_sun	± 0.03	NASA Exoplanet Archive	Klein et al. 2021	2021
0.698009	R_sun	± 0.0211	NASA Exoplanet Archive	ExoFOP	2020
0.75	R_sun	± 0.03	NASA Exoplanet Archive	Plavchan et al. 2020	2020

Effective temperature 8 values

Value	Unit	Uncertainty	Source	Reference	Year
3,540	K	± 120	NASA Exoplanet Archive	Mallorquín et al. 2024	2024
3,665	K	± 31	NASA Exoplanet Archive	Donati et al. 2023	2023
3,678	K	± 90	NASA Exoplanet Archive	Wittrock et al. 2023	2023
3,700	K	± 100	NASA Exoplanet Archive	Zicher et al. 2022	2022
3,700	K	± 100	NASA Exoplanet Archive	Martioli et al. 2021	2021
3,700	K	± 100	NASA Exoplanet Archive	Klein et al. 2021	2021
3,588	K	± 87	NASA Exoplanet Archive	ExoFOP	2020
3,700	K	± 100	NASA Exoplanet Archive	Plavchan et al. 2020	2020

Related objects

Object	Type	Relation
AU Mic b	Exoplanet	host
AU Mic c	Exoplanet	host
AU Mic d	Exoplanet	host
AU Mic e	Exoplanet	host

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
AU Mic c	Exoplanet	0″	8.81
AU Mic d	Exoplanet	0″	8.81
AU Mic e	Exoplanet	0″	8.81
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 · Registry entry updated 2026-08-14.