Planet MASCARA-3 Ab

Detailed information about planet MASCARA-3 Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name
MASCARA-3 Ab
Planet Status
Confirmed
Discovered in
2019
Update
2024-07-31
Mass
5.18 ( ± 0.22 ) MJ
Mass*sin(i)
—
Semi-Major Axis
0.06971 ( +0.0088 -0.0096 ) AU
Orbital Period
5.5514926 ( ± 8e-06 ) day
Eccentricity
0.085 ( ± 0.023 )
ω
41.0 ( +14.0 -20.0 ) deg
Tperi
2457146.6 ( +0.17 -0.22 ) JD
Radius
1.272 ( ± 0.022 ) RJ
Inclination
89.16 ( +0.6 -0.77 ) deg
Detection Method
Primary Transit
Mass Meas. Method
Radial Velocity
Radius Meas. Method
Primary Transit
Primary transit
2457147.053 ( ± 0.002 ) JD
Secondary transit
2457144.422 ( +0.06 -0.056 ) JD
λ
2.6 ( +5.1 -3.6 ) deg
Impact Parameter b
0.32 ( ± 0.01 )
Time Vr=0
—
Velocity Semiamplitude K
403.0 ( ± 11.0 ) m/s
Calculated temperature
1458.0 ( ± 16.0 ) K
Measured temperature
—
Hottest point longitude
—
Geometric albedo
—
Surface gravity log(g/gH)
—
Alternate Names
HD 93148 b, KELT-24 b, KELT-24 Ab
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference

13 Jun 2019: The planet has been discovered independently by two team: KELT (Rodriguez et al. 2019) and MASCARA (Hjorth et al. 2019) with similar parameters.

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Star

Name
MASCARA-3 A
Distance
96.79 ( ± 0.3 ) pc
Spectral type
F7IV-V
Apparent magnitude V
8.4
Mass
1.309 ( +0.052 -0.018 ) MSun
Age
2.81 ( +4.0 -0.79 ) Gyr
Effective temperature
6347.0 ( +57.0 -64.0 ) K
Radius
1.513 ( +0.035 -0.031 ) RSun
Metallicity [Fe/H]
0.168 ( +0.068 -0.058 )
Detected Disc
—
Magnetic Field
—
RA2000
10:47:38.0
Dec2000
+71:39:21.0
Alternate Names
KELT-24, HD 93148

A late K to early M dwarf companion star lies 200 AUs away. The stellar companion could be an unresolved binary too (Giovinazzi et al. 2024).

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