Planet TOI-1846 b

Detailed information about planet TOI-1846 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name
TOI-1846 b
Planet Status
Confirmed
Discovered in
2025
Publication
Status
Published in a refereed paper
Update
2025-06-24
Mass
0.0138 ( +0.005 -0.003 ) MJ
Mass*sin(i)
—
Semi-Major Axis
0.03646 ( ± 0.00074 ) AU
Orbital Period
3.9306737 ( ± 4.4e-06 ) day
Eccentricity
—
Angular distance
—
ω
—
Tperi
—
Radius
0.15987 ( ± 0.00607 ) RJ
Inclination
88.65 ( ± 0.2 ) deg
Detection Method
Primary Transit
Mass Meas. Method
Radial Velocity
Radius Meas. Method
Primary Transit
Primary transit
2458768.02844 ( ± 0.001 ) JD
Secondary transit
—
λ
—
Impact Parameter b
0.464 ( +0.045 -0.06 )
Time Vr=0
—
Velocity Semiamplitude K
3.17 ( +1.1 -0.7 ) m/s
Calculated temperature
568.0 ( ± 6.0 ) K
Measured temperature
—
Hottest point longitude
—
Geometric albedo
—
Surface gravity log(g/gH)
—
Alternate Names
—
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference

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Star

Name
TOI-1846
Distance
47.244 ( ± 0.033 ) pc
Spectral type
M3V
Apparent magnitude V
14.0
Apparent magnitude I
—
Apparent magnitude J
—
Apparent magnitude H
—
Apparent magnitude K
—
Mass
0.418 ( ± 0.025 ) MSun
Age
7.2 ( +4.6 -5.0 ) Gyr
Effective temperature
3568.0 ( +47.0 -41.0 ) K
Radius
0.397 ( ± 0.012 ) RSun
Metallicity [Fe/H]
0.169 ( ± 0.05 )
Detected Disc
—
Magnetic Field
—
RA2000
17:11:49.2
Dec2000
+54:31:40.2
Alternate Names
LP 138-33

Deacon et al. (2015) report an L1.5 brown dwarf companion 90.2 arcseconds away (=7,760 AUs). Mugrauer & Michel (2020) report a closer companion at 4,267 AUs compatible with a very low-mass M dwarf companion (0.08 MSol). It is currently not possible to establish whether TOI-1846 is part of a binary or hierarchical triple system.

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