Planet Kepler-21 Ab
Detailed information about planet Kepler-21 Ab and its parameters.
Planet
- Name
- Kepler-21 Ab
- Planet Status
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- Discovered in
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- Update
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- Mass
- Mass*sin(i)
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- Semi-Major Axis
- Orbital Period
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- Eccentricity
- ω
- Tperi
- Radius
- Inclination
- Detection Method
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- Mass Meas. Method
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- Radius Meas. Method
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- Primary transit
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- Secondary transit
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- λ
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- Impact Parameter b
- Time Vr=0
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- Velocity Semiamplitude K
- Calculated temperature
- Measured temperature
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- Hottest point longitude
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- Geometric albedo
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- Surface gravity log(g/gH)
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- Alternate Names
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Data Source | Type | Result Value | Result Figure | Notes | Reference |
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Molecule | Data Source | Type | Result Value | Result Figure | Notes | Reference |
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See also Planets in Binaries webpage.
No link
Star
- Name
- Kepler-21 A
- Distance
- Spectral type
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- Apparent magnitude V
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- Mass
- Age
- Effective temperature
- Radius
- Metallicity [Fe/H]
- Detected Disc
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- Magnetic Field
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- RA2000
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- Dec2000
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- Alternate Names
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Ginski et al. (2012) detect a comoving M dwarf companion star 0.756 arcseconds away (81.6 to 87 AUs at 108 pc). Furlan et al. (2017) report a way fainter additional companion 1.084 arcseconds away (117 AUs at 108 pc). Estimated luminosity for this latter object seems compatible with either a very low-mass M dwarf star or an L-type brown dwarf.
No link
- Simbad
- Most recent references (ADS)