Planet TOI-270 b

Name TOI-270 b
Planet Status Confirmed
Discovered in 2019
Mass 0.006 ( -0.0022 +0.0047 ) MJ
Mass*sin(i)
Semi-Major Axis 0.0306 ( -0.0057 +0.0033 ) AU
Orbital Period 3.36008 ( -7e-05 +6.5e-05 ) day
Eccentricity 0.0
ω
Tperi
Radius 0.11125 (± 0.0074) RJ
Inclination 88.65 ( -1.4 +0.85 ) deg
Update 2019-03-15
Detection Method Primary Transit
Mass Detection Method
Radius Detection Method Primary Transit
Primary transit 2458461.01464 ( -0.00093 +0.00084 ) JD
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature 528.0 ( -32.0 +56.0 ) K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

TOI-270
Name TOI-270
Distance 22.453 (± 0.021) pc
Spectral type M3.0V
Apparent magnitude V 12.6
Mass 0.4 (± 0.02) MSun
Age
Effective temperature 3386.0 ( -131.0 +137.0 ) K
Radius 0.38 (± 0.02) RSun
Metallicity [Fe/H] -0.17 (± 0.1)
Detected Disc
Magnetic Field
RA2000 04:33:40.0
Dec2000 -51:57:22
Alternate Names
Planetary system
3 planets

More data


Related publications

Hubble Space Telescope transmission spectroscopy for the temperate sub-Neptune TOI-270d: a possible hydrogen-rich atmosphere containing water vapour
2023 MIKAL-EVANS Th., MADHUSUDHAN N., DITTMANN J., GUENTHER M., WELBANKS L. et al.
Astron. J., 165, 84
paper   arxiv

Masses and compositions of three small planets orbiting the nearby M dwarf L231-32 (TOI-270) and the M dwarf radius valley
2021 VAN EYLEN V., ASTUDILLO-DEFRU N., BONFILS X., LIVINGSTON J. et al.
MNRAS, 507, 2154
paper   arxiv

Transit Timings Variations in the three-planet system: TOI-270
2021 KAYE L., VISSAPRAGADA Sh., GÜNTHER M., AIGRAIN S., MIKAL-EVANS Th. et al.
MNRAS, in press
paper  

Properties of Sub-Neptune Atmospheres: TOI-270 System
2020 CHOUQAR J., BENKHALDOUN Z., JABIRI A., LUSTIG-YAEGER J., SOUBKIOU A. & SZENTGYORGYI A.
MNRAS, 495, 962
paper   arxiv

A Super-Earth and two sub-Neptunes transiting the bright, nearby, and quiet M-dwarf TOI-270
2019 GÜTHER M., POZUELOS F., DITTMANN J., DRAGOMIR D., KANE S. et al.
Nature Astronomy, in press
paper  arxiv