Planet AU Mic b

Name AU Mic b
Planet Status Confirmed
Discovered in 2020
Mass 0.0368 (± 0.016) MJ +
Mass*sin(i)
Semi-Major Axis 0.0645 (± 0.0013) AU +
Orbital Period 8.463 (± 2e-06) day +
Eccentricity 0.04 ( -0.026 +0.047 ) +
ω 179.0 ( -125.0 +128.0 ) deg
Tperi
Radius 0.3908 (± 0.0161) RJ +
Inclination 89.03 (± 0.12) deg
Update 2022-03-04
Detection Method Primary Transit
Mass Detection Method Radial Velocity
Radius Detection Method Primary Transit
Primary transit 2458330.39051 (± 0.00015) JD +
Secondary transit
λ
Impact Parameter b 0.16 ( -0.11 +0.14 )
Time Vr=0
Velocity Semiamplitude K 5.8 (± 2.5) m/s +
Calculated temperature 593.0 (± 21.0) K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

AU Mic
Name AU Mic
Distance 9.79 (± 0.04) pc
Spectral type M1V
Apparent magnitude V 8.6
Mass 0.5 (± 0.03) MSun
Age 0.022 (± 0.003) Gyr
Effective temperature 3700.0 (± 100.0) K
Radius 0.75 (± 0.03) RSun
Metallicity [Fe/H]
Detected Disc
Magnetic Field
RA2000 20:45:10.0
Dec2000 -31:20:27
Alternate Names
Planetary system
2 planets

More data


Related publications

One year of AU Mic with HARPS: II -- stellar activity and star-planet interaction
2022 KLEIN B., ZICHER N., KAVANAGH R., NIELSEN L., AIGRAIN S. et al.
MNRAS, 512, 5067
paper   arxiv  

One year of AU Mic with HARPS: I - measuring the masses of the two transiting planets
2022 ZICHER N., BARRAGAN O., KLEIN B., AIGRAIN S., OWEN J. et al.
MNRAS, submitted
arxiv  

Searching for flaring star-planet interactions in AU Mic TESS observations
2022 ILIN E. & POPPENHÄGER K.
MNRAS, accepted
arxiv  

Flares, Rotation, and Planets of the AU Mic System from TESS Observations
2022 GILBERT E., BARCLAY Th., QUINTANA E., WALKOWICZ L., VEGA L. et al.
Astron. J., 163, 147
paper   arxiv  

Orbital Dynamics and the Evolution of Planetary Habitability in the AU Mic System
2022 KANE S., FOLEY B., HILL M., UNTERBORN C., BARCLAY Th. et al.
Astron. J., 163, 20
paper   arxiv  

A model for spin-orbit commensurability and synchronous starspot activity in stars with close-by planets
2022 LANZA A.
Astron. & Astrophys., 658, A195
paper   arxiv

Transit timing variations of AU Microscopii b and c
2022 SZABO G., GARAI A., BRANDEKER A., GANDOLFI D., WILSON T. et al.
Astron. & Astrophys., 659, L7
paper   arxiv  

Transit Timing Variations for AU Microscopii b & c
2022 WITTROCK J., DREISLER S., REEFE M., MORRIS B., PLAVCHAN P. et al.
Astron. J., submitted
arxiv  

Simulating the Space Weather in the AU Mic System: Stellar Winds and Extreme Coronal Mass Ejections
2022 ALVARADO-GOMEZ J., COHEN O., DRAKE J., FRASCHETTI F., POPPENHÄGER K. et al.
ApJ, 928, 147
paper   arxiv  

Planet-induced radio emission from the coronae of M dwarfs: the case of Prox Cen and AU Mic
2021 KAVANAGH R., VIDOTTO A., KLEIN B., JARDINE M., DONATI J.-F. & FIONNAGAIN D.
MNRAS, accepted
arxiv

Planet-induced radio emission from the coronae of M dwarfs
2021 KAVANAGH R., VIDOTTO A., KLEIN B., JARDINE M., DONATI J.-F. et al.
Proceedings of the 20.5th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
arxiv

Stumbling over planetary building blocks: AU Microscopii as an example of the challenge of retrieving debris-disk dust properties
2021 ARNOLD J., WEINBERGER A., VIDEEN G. & ZUBKO E.
arxiv  

The changing face of AU Mic b: stellar spots, spin-orbit commensurability, and Transit Timing Variations as seen by CHEOPS and TESS
2021 SZABO G., GANDOLFI D?n BRANDECKER A., CSIZMADIA Sz., GARAI Z. et al.
Astron. & Astrophys., 654, A159
paper   arxiv  

CHEOPS
2021 FORTIER A.
Spatium, 48
paper  

Diving Beneath the Sea of Stellar Activity: Chromatic Radial Velocities of the Young AU Mic Planetary System
2021 CALE B., REEFE M., PLAVCHAN P., TANNER A., GAIDOS E. et al.
ApJ, submitted
arxiv

New constraints on the planetary system around the young active star AU Mic. Two transiting warm Neptunes near mean-motion resonance
2020 MARTIOLI E., HEBRARD G., CORREIA A., LASKAR J. & LECAVELIER DES ETANGS A.
Astron. & Astrophys., 649, A177
paper   arxiv

A planet within the debris disk around the pre-main-sequence star AU Microscopii
2020 PLAVCHAN P., BARCLAY Th., GAGNE J., GAO P., CALE B. et al.
Nature, 582, 497
paper   arxiv  

The Youngest Planet to Have a Spin-Orbit Alignment Measurement AU Mic b
2020 ADDISON B., HORNER J., WITTENMYER R., PLAVCHAN P., WIRIGHT D. et al.
Astron. J., 162, 137
paper   arxiv  

Transmission spectroscopy and Rossiter-McLaughlin measurements of the young Neptune orbiting AU Mic
2020 PALLE R., OSHAGH M., CASASAYAS-BARRIS N., HIRANO T. et al.
Astron. & Astrophys., 643, A25
paper  arxiv  

The dichotomy of atmospheric escape in AU Mic b
2020 CAROLAN S., VIDOTTO A., PLAVCHAN P., VILLARREAL D'ANGELO C. & HAZRA G.
MNRAS, 498, L53
paper  arxiv  

Spin-orbit alignment and magnetic activity in the young planetary system AU Mic
2020 MARTIOLI E., HEBRARD G., MOUTOU C., DONATI J.-F., ARTIGAU E. et al.
Astron. & Astrophys., 641, L1
paper  arxiv  

Limits on the Spin-Orbit Angle and Atmospheric Escape for the 22 Myr-old Planet AU Mic b
2020 HIRANO T., KRISHNAMURTHY V., GAIDOS E., FLEWELLING H., MANN A. et al.
ApJ. Letters, 899, L13
paper  arxiv  

Magnetic Field of the Active Planet-hosting M Dwarf AU Mic
2020 KOCHOKHOV O. & REINERS A.
ApJ, accepted
arxiv  

Investigating the young AU~Mic system with SPIRou: large-scale stellar magnetic field and close-in planet mass
2020 KEIN B., DONATI J.-F., MOUTOU C., DELFOSSE X., BONFILS X. et al.
MNRAS, 502, 188
paper   arxiv

Observations of fast-moving features in the debris disk of AU Mic on a three-year timescale: Confirmation and new discoveries
2018 BOCCALETTI A., SEZESTRE E., LAGRANGE A.-M., THEBAULT Ph., GRATTON R. et al.
Astron. & Astrophys., in press
paper  arxiv