Planet Kepler-21 Ab
Detailed information about planet Kepler-21 Ab and its parameters.
Planet
- Name
- Kepler-21 Ab
- Mass
- Mass*sin(i)
-
—
- Semi-Major Axis
- Orbital Period
-
- Eccentricity
- ω
- Tperi
- Radius
- Inclination
- Primary transit
-
- Secondary transit
-
—
- λ
-
—
- Impact Parameter b
- Time Vr=0
-
—
- Velocity Semiamplitude K
- Calculated temperature
- Measured temperature
-
—
- Hottest point longitude
-
—
- Surface gravity log(g/gH)
-
—
| Data Source | Type | Result Value | Result Figure | Notes | Reference |
|---|
| Molecule | Data Source | Type | Result Value | Result Figure | Notes | Reference |
|---|
See also Planets in Binaries webpage.
No link
Star
- Name
- Kepler-21 A
- Distance
- Spectral type
-
F6IV
- Apparent magnitude V
-
8.27
- Apparent magnitude I
-
—
- Apparent magnitude J
-
—
- Apparent magnitude H
-
—
- Apparent magnitude K
-
—
- Mass
- Age
- Effective temperature
- Radius
- Metallicity [Fe/H]
- Detected Disc
-
—
- Magnetic Field
-
—
- RA2000
-
19:09:26.8
- Dec2000
-
+38:42:50.5
- Alternate Names
-
Kepler-21, BD+38 3455, WISE J190926.86+384250.7, HD 179070, HIP 94112, KOI-975, KIC 3632418, SAO 67891, TIC 121214185, TYC 3120-00963-1, 2MASS J19092683+3842505
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)