Planet sig Per b

Detailed information about planet sig Per b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name
sig Per b
Mass
—
Mass*sin(i)
6.5 ( +1.0 -1.0 ) MJ
Semi-Major Axis
1.8 ( ± 0.1 ) AU
Orbital Period
579.8 ( ± 2.4 ) day
Eccentricity
0.3 ( ± 0.1 )
ω
83.5 ( ± 14.2 ) deg
Tperi
2453022.6 ( ± 20.7 ) JD
Radius
—
Inclination
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Primary transit
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Secondary transit
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λ
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Impact Parameter b
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Time Vr=0
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Velocity Semiamplitude K
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Calculated temperature
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Measured temperature
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Hottest point longitude
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Surface gravity log(g/gH)
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Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference

Spaeth et al. (2025) reckon the radial velocity signal to be associated with stellar activity rather than an orbiting companion.

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Star

Name
sig Per
Distance
108.3 ( ± 3.0 ) pc
Spectral type
K3III
Apparent magnitude V
4.36
Apparent magnitude I
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Apparent magnitude J
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Apparent magnitude H
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Apparent magnitude K
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Mass
2.25 ( ± 0.5 ) MSun
Age
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Effective temperature
4367.0 ( ± 100.0 ) K
Radius
28.0 RSun
Metallicity [Fe/H]
-0.22 ( ± 0.23 )
Detected Disc
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Magnetic Field
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RA2000
03:30:35.0
Dec2000
+47:59:43.0
Alternate Names
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No remarks

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