Planet alf Cen B b

Name alf Cen B b
Planet Status Retracted
Discovered in 2012
Mass
Mass*sin(i) 0.0036 ( -0.0003 +0.0003 ) MJ
Semi-Major Axis 0.04 AU
Orbital Period 3.2357 (± 0.0008) day
Eccentricity 0.0
ω
Tperi
Radius
Inclination
Update 2018-08-13
Detection Method Radial Velocity
Mass Detection Method
Radius Detection Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

alf Cen B
Name alf Cen B
Distance 1.295 pc
Spectral type K1V
Apparent magnitude V 1.33
Mass 0.934 (± 0.006) MSun +
Age
Effective temperature 5214.0 (± 33.0) K +
Radius 0.8632 (± 0.0037) RSun +
Metallicity [Fe/H]
Detected Disc
Magnetic Field
RA2000 14:39:35.0
Dec2000 -60:50:15
Alternate Names
Planetary system 1 planet

More data

Observability Predictor

Remarks

15 Oct 2015: Planet challenged by Rajpaul et al. 2015. Dumusque publicly conceded that a spurious signal mimicked the signature of an orbiting exoplanet.

Related publications

A model Earth-sized planet in the habitable zone of α Centauri A/B
2022 WANG H., LINEWEAVER Ch., QUANZ S., MOJZSIS S., IRELAND T. et al.
ApJ, 927, 134
paper   arxiv  

Measuring precise radial velocities on individual spectral lines. III. Dependence of stellar activity signal on line formation temperature
2022 AL MOULLA K., DUMUSQUE X., CRETIGNIER M., ZHAO Y. & VALENTI J.
Astron. & Astrophys., in press
paper  

A Search for Optical Laser Emission from Alpha Centauri AB
2022 MARCY G.
MNRAS, 516, 2938
paper   arxiv  

Accounting for stellar activity signals in radial-velocity data by using Change Point Detection techniques
2022 SIMOLA U., BONFANTI A., DUMUSQUE X., CISEWXKI-KEHE J., KASKI S. & CORANDER J.
Astron. & Astrophys., submitted
arxiv  

The Detectability of Nightside City Lights on Exoplanets
2022 BEATTY Th.
MNRAS, 513, 2652
paper   arxiv

Simulations of astrometric planet detection in alpha Centauri by intensity interferometry
2022 NIKU RAI K., SARANGI S., SAHA P. & BASAK S.
MNRAS, submitted
arxiv  

Into the Depths: A New Activity Metric for High-precision Radial Velocity Measurements Based on Line Depth Variations
2022 SIEGEL J., RUBENZAHL R., HALVERSON S. & HOWARD A.
Astron. J., 163, 260
paper  

Spectral Line Depth Variability in Radial Velocity Spectra
2022 WISE A., PLAVCHAN P., DUMUSQUE X., CEGLA H. & WIGHT D.
Astron. J., submitted
arxiv  

Magnitude-squared Coherence: A Powerful Tool for Disentangling Doppler Planet Discoveries from Stellar Activity
2022 DODSON-ROBINSON S., DELGADO V., HARRELL J. & HALEY Ch.
Astron. J., 163, 169
paper  

Stellar activity correction using PCA decomposition of shells
2022 CRETIGNIER M., DUMUSQUE X. & PEPE F.
Astron. & Astrophys., 659, A68
paper  

X-Ray Chronicles of Alpha Centauri: The Swooning of α Cen B
2022 AYRES T.
Res. Notes AAS, 6, 24
paper  

A new estimation of astrometric exoplanet detection limits in the habitable zone around nearby stars
2022 MEUNIER N. & LAGRANGE A.-M.
Astron. & Astrophys., 659, A104
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A Search for Radio Technosignatures at the Solar Gravitational Lens Targeting Alpha Centauri
2022 TUSAY N., HUSTON M., DEDRICK C., KERBY S., PALUMBO III M. et al.
Astron. J., 164, 116
paper   arxiv  

Precision Millimeter Astrometry of the α Centauri AB System
2021 AKESON R., BEICHMAN Ch., KERVELLA P., FOMALONT E. & BENEDICT F.
ApJ, 162, 14
paper   arxiv

Orbital Stability of Planet-hosting Triple-star Systems according to Hill: Applications to Alpha Centauri and 16 Cygni
2021 BOYLE L. & CUNTZ M.
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paper  

Laser Communication with Proxima and Alpha Centauri using the Solar Gravitational Lens
2021 MARCY G., TELLIS N. & WISHNOW E.
MNRAS, accepted
arxiv  

Milankovitch Cycles for a Circumstellar Earth-analog within α Centauri-like Binaries
2021 QUARLES B., LI G. & LISSAUER J.
MNRAS, 509, 2736
paper   arxiv  

Transit Search for Exoplanets around Alpha Centauri A and B with ASTERIA
2021 KRISHNAMURTHY A., KNAPP M., GÜTHER M., DAYLAN T., DEMORY B.-O. et al.
Astron. J., 161, 275
paper  

Exomoons in Systems with a Strong Perturber: Applications to α Cen AB
2021 QUARLES B., EGGL S. & ROSARIO-FRANCO M.
Astron. J., 162, 58
paper   arxiv

The Copernican Principle Rules Out BLC1 as a Technological Radio Signal from the Alpha Centauri System
2021 SIRAJ A. & LOEB A.
arxiv

Imaging low-mass planets within the habitable zone of α Centauri
2021 WAGNER K., BOEHLE A., PATHAK P., KASPER M., ARSENAULT R. et al.
Nature Communications., 12, 922
paper   arxiv

The TOLIMAN space telescope: discovering exoplanets in the solar neighbourhood
2020 TUHTILL P., DESDOIGTS L., BETTERS Ch., NORRIS B., CAIRNS I & LEON6SAAL S.
SPIE Optical and Infrared Interferometry and Imaging, 11446, 1144612
paper  

In Search for a Planet Better than Earth: Top Contenders for a Superhabitable World
2020 SCHULZE-MAKUCH D., HELLER R. & GUINAN E.
Astrobiology, 20, 1394
paper  

Habitable Zones in Binary Star Systems: A Zoology
2020 EGGL S., GEORGAKARAKOS N. & ILAT-LOHINGER E.
galaxies, submitted
arxiv  

Measuring precise radial velocities on individual spectral lines : II. Dependance of stellar activity signal on line depth
2020 CRETIGNIER M., DUMUSQUE X., ALLART R., PEPE F. & LOVIS Ch.
Astron. & Astrophys., 633, A76
paper  arxiv  

Activity and telluric contamination in HARPS observations of Alpha Centauri B
2019 LISOGORSKYI M., JONES H. & FENG F.
MNRAS, 485, 4804
paper  arxiv  

NEAR: First Results from the Search for Low-Mass ­Planets in a Cen
2019 KASPER M., ARSENAULT R., KÄFT U., JAKOB G., LEVERATTO S. et al.
The Messenger, 178, 5
paper  

Exoplanet Terra Incognita
2018 BERDYUGINA S., KUHN J., BELIKOV R. & TUTYSHEV S.
arxiv  

New Methods for Finding Activity-Sensitive Spectral Lines: Combined Visual Identification and an Automated Pipeline Find a Set of 40 Activity Indicators
2018 WISE A., DODSON-ROBINSON S., BENEVOUR K. & PROVINI A.
Astron. J., accepted
arxiv  

New Methods for Finding Activity-Sensitive Spectral Lines: Combined Visual Identification and an Automated Pipeline Find a Set of 40 Activity Indicators
2018 WISE, A., DODSON-ROBINSON, S., BEVENOUR, K. & A. PROVINI
Astron. J., accepted
paper   arxiv   https://arxiv.org/abs/1808.09009 ADS  

The Breakthrough Starshot System Model
2018 PARKIN K.
arxiv  

The chemical composition of α Cen AB revisited
2018 MOREL Th.
Astron. & Astrophys., accepted
arxiv  

Detection of Alpha Centauri at radio wavelengths: chromospheric emission and search for star-planet interaction
2018 TRIGILIO C., UMANA G., CAVALLERO F., AGLIOZZO C., LETO P. et al.
MNRAS, submitted
arxiv  

Project Blue: Visible Light Imaging Search for Terrestrial-class Exoplanets in the Habitable Zones of Alpha Centauri A and B
2018 MORSE J., BENDEK E., CABROL N., MARCHIS F., TURNBULL M. et al.
White Paper to the US National Academy of Sciences
arxiv  

Long-Term Stability of Tightly Packed Multi-Planet Systems in Prograde, Coplanar, Circumstellar Orbits within the α Centauri AB System
2018 QUARLES B. & LISSAUER J.
Astron. J., 155, 130
paper  arxiv  

Alpha Centauri Beyond the Crossroads
2018 AYRES T.
Res. Notes AAS, 2, 17
paper  

Long-Term Stability of Planets in the α Centauri System, II: Forced Eccentricities
2018 QUARLES B., LISSAUER J. & KAIB N.
Astron. J., 155, 64
paper  arxiv  

Planet Detectability in the Alpha Centauri System
2018 ZHAO L., FISCHER D., BREWER J., GIGUERE M. & ROJAS-AYALA B.
ApJ, 155, 24
paper  arxiv  

Searching for Faint Comoving Companions to the α Centauri system in the VVV Survey Infrared Images
2017 BEAMIN J., MINNITI D., PULLEN J., IVANOV V., BENDEK E. et al.
MNRAS
arxiv  

The radii and limb darkenings of Alpha Centauri A and B. Interferometric measurements with VLTI/PIONIER
2017 KERVELLA P., BIGOT I., GALLENNE A. & THEVENIN F.
Astron. & Astrophys., 597, A137
paper  

Deceleration of high-velocity interstellar photon sails into bound orbits at α Centauri
2017 HELLER R. & HIPPKE M.
ApJ. Letters, 835, L32
paper   arxiv   ADS

Optimized trajectories to the nearest stars using lightweight high-velocity photon sails
2017 HELLER R., HIPPKE M. & KERVELLA P.
Astron. J., 154, 115
paper  arxiv  

Interstellar communication. I. Maximized data rate for lightweight space-probes
2017 HIPPKE M.
Int. J. Astrobiol., 18, 267
paper  arxiv  

Surface Imaging of Proxima b and Other Exoplanets: Topography, Biosignatures, and Artificial Mega-Structures
2017 BERDYUGINA S. & KUHN J.
ApJ, submitted
arxiv  

NEAR: Low-mass Planets in α Cen with VISIR
2017 KASPER M., ARSENAULT R., KÄFL H.-U., JAKOB G., FUENTESECA E. et al.
Messenger, 169, 16
paper  

Future Exoplanet Research: Science Questions and How to Address Them
2017 SCHNEIDER J.
Exoplanet Handbook (Springer), in press
arxiv  

Dynamics and habitability in circumstellar planetary systems of known binary stars
2016 BAZSÓ A., PILAT-LOHINGER E., EGGL S., FUNK B., BANCELIN, D. & G. RAU
MNRAS, 466, 1555
ADS   paper  

Long-term Stability of Planets in the  Centauri System
2016 QUARLES B. & LISSAUER J.
Astron. J., 151, 111
paper  arxiv   ADS  

Ghost in the time series: no planet for Alpha Cen B
2016 RAJPAUL V., AIGRAIN S. & ROBERTS S.
MNRAS, 456, L6
paper  arxiv  ADS

Milankovitch Cycles of Terrestrial Planets in Binary Star Systems
2016 FORGAN, D.
MNRAS, 463, 2768
paper  ADS  arxiv  

Proxima's orbit around Alpha Centauri
2016 KERVELLA P. & THEVENIN F.
Astron. & Astrophy., 598, L7
paper  arxiv  ADS

A terrestrial planet candidate in a temperate orbit around Proxima Centauri
2016 ANGLADA-ESCUDÉ, G., AMADO, P., BARNES, J., BERDIÑAS, Z., BUTLER, R. & 26 additional authors
Nature, 536, 437
paper   arxiv   ADS

A method to directly image exoplanets in multi-star systems such as Alpha-Centauri
2015 THOMAS S., BELIKOV R. & BENDEK E.
in SPIE 2015
arxiv  

A Gaussian process framework for modelling stellar activity signals in radial velocity data
2015 RAJPAUL V., AIGRAIN S., OSBORNE M., REECE S. & ROBERTS S.
MNRAS, accepted
arxiv  

Hubble Space Telescope search for the transit of the Earth-mass exoplanet Alpha Centauri Bb
2015 DEMORY B.-O., EHRENREICH D., QUELOZ D., SEAGER S., GILLILAND R. et al.
MNRAS, 450, 2043
paper  arxiv  ADS  

What is the mass of alpha Cen B b?
2015 PLAVCHAN P., CHEN X. & POHL G.
ApJ, 805, 174
paper  arxiv  ADS

Tachoastrometry: astrometry with radial velocities
2015 PASQUINI L., CORTES C., LOMBARDI M., MONACO L., LEÃO I. & DELABRE B.
Astron. & Astrophys., 574, A76
paper  

On the Likelihood of Planet Formation in Close Binaries
2015 JANG-CONDELL H.
ApJ, 799, 147
paper  arxiv  

Planet Formation in Stellar Binaries. II. Overcoming the Fragmentation Barrier in α Centauri and γ Cephei-like Systems
2015 RAFIKOV R. & SILSBEE K.
ApJ, 798, 70
paper  arxiv  

The Mt John University Observatory Search For Earth-mass Planets In The Habitable Zone Of Alpha Centauri
2015 ENDL M., BERGMANN C., HEARNSHAW J., BERNES S., WITTENMYER R. et al.
Int. J. Astrobiolo., 14, 305
paper  arxiv  ADS  

Searching for Earth-mass planets around α Centauri: precise radial velocities from contaminated spectra
2015 BERGMANN, C., ENDL, M. HEARNSHAW, J., WITTENMYER, R. & D. WRIGHT
International J. of Astrobiology, 14, 173
paper  arxiv ADS  

Global warming as a detectable thermodynamic marker of Earth-like extrasolar civilizations: the case for a telescope like Colossus
2015 KUHN J. & BERDYGINA S.
Int. J. Astrobiol., 14, 401
paper  ADS

How to Directly Image a Habitable Planet Around Alpha Centauri with a ~30-45cm Space Telescope
2015 BELIKOV R., BENDEK E., THOMAS S., MALES J. & LOZI J.
in SPIE 9605
arxiv  

Space telescope design to directly image the habitable zone of Alpha Centauri
2015 BENDEK E., BELIKOV R., LOZI J., THOMAS S., MALES J. et al.
in SPIE 2015
arxiv  

The Metallicity Dependence of Giant Planet Incidence
2014 GONZALEZ G.
MNRAS, 443, 393
paper  arxiv  

XUV-driven mass loss from extrasolar giant planets orbiting active stars
2014 CHADNEY J., GALAND M., UNRUH Y., KOSKINEN T. & SANZ-FORCADA J.
Icarus, accepted
arxiv  

Dynamical Stability of Terrestrial Planets in the Binary α Centauri System
2014 ANDRADE-INES, E. & MICHTCHENKO T.
MNRAS, accepted
arxiv 

Planet formation in Binaries
2014 THEBAULT Ph. & HAGHIGHIPOUR N.
in "Planetary Exploration and Science: Recent Advances and Applications", Jin & Haghighipour Eds?
arxiv  

The Ups and Downs of α Centauri
2014 AYRES Th.
Astron. J., 147, 59
paper  

How dusty is alpha Centauri? Excess or non-excess over the infrared photospheres of main-sequence stars
2014 WIEGERT J., LISEAU R., THEBAULT Ph., OLOFSSON G., MORA A. et al.
Astron. & Astrophys., accepted
arxiv 

Superhabitable Worlds
2014 HELLER R. & ARMSTRONG J.
Astrobiology, 14, 50
paper  arxiv  ADS  

Microlensing Events by Proxima Centauri in 2014 and 2016: Opportunities for Mass Determination and Possible Planet Detection
2014 SAHU K., BOND H., ANDERSON J. & DOMINIK M.
ApJ, 782, 89
paper  arxiv 

Sobre la habitabilidad de exoplanetas orbitando a Próxima del Centauro
2013 LOEZ-AGUILA M., CARDENAS-ORTIZ R. & RODRIGUEZ-LOPEZ L.
Revista Cubana de Fisica, 30, 77
paper  arxiv 

Possibilities of life around Alpha Centauri B
2013 GONZALEZ A., CARDENAS R. & HEARNSHAWJ.
Revista Cubana de Fisica, 30, 81
paper  arxiv  

Upcoming Microlensing by Proxima Centauri: A Rare Opportunity for Mass Determination and Planet Detection
2013 SAHU K., BOND H., ANDERSON J. & DOMINIK M.
in 222nd AAS Meeting (Indianapolis), 116.05

Planet formation in small separation binaries: not so excited after all
2013 RAFIKOV R.
ApJ Letters, 765, L8
paper  arxiv  

An Earth-mass planet orbiting α Centauri B
2012 DUMUSQUE X., PEPE F., LOVIS Ch., SEGRANSAN D., SAHLMANN J., BENZW., BOUCHY F., MAYOR M., QUELOZ D., SANTOS N. & UDRY S.
Nature, 491, 207
paper  

A journey through time and space: Alpha Centauri
2012 BEECH M.
Astron. & Geophys., 53, 6.10
paper  

Planet hunting pioneer calls for probe to alpha Centauri
2011 REICH E.
Nature, 27 May 2011
paper  

Formation and Detectability of Terrestrial Planets Around Alpha Centauri B
2008 GUEDES J., RIVERA J., DAVIS E., LAUGHLIN G. QUINTANA E. & FISCHER D.
ApJ., 679, 1582
paper

Formation and Detectability of Terrestrial Planets Around Alpha Centauri B
2008 GUEDES J.
BAAS, 41, no 1, 346.07
abstract

The European Southern Observatory planetary search program: Preliminary results
1996 HATZES A., KÜRSTER M., COCHRAN W., DENNERL R. & DÖBELREINER S.
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