|
Exoplanet Name : |
HD 4732 A b |
|
Alternate Name : |
"HR 228 A b, HD 4732 b, HR 228 b" |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
2.3700 |
(Mjup) |
753.5131 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
1.1900 |
(AU) |
1.1900 |
(AU Est.) |
|
Eccentricity : |
0.1300 |
|
Orbital Period(Yrs) |
0.9861 |
|
Orbital Period(Observed/Estimated) |
360.20 |
(Days Obs.) |
359.45 |
(Days Est.) |
|
Surface Gravity (G Earth) |
7.2769 |
|
Star Radiation at Atmospheric Boundary: |
15271.3 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
496.1 |
(K) |
|
Blackbody T 0.3(K) |
465.9 |
(K) |
|
Blackbody T 0.7(K) |
377.0 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
590.0 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
554.1 |
(K) |
|
Size Class: |
Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Radial Velocity |
|
Mass Detection : |
|
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
HD 4732 A |
|
Alternate Name : |
HD 4732 |
|
Star Distance(LY) : |
179.0 |
|
Stellar Radius(Rsun) : |
5.4 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.7 |
(Msun Measured) |
1.7 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
4959 |
(K) |
|
Spectral type : |
K0 IV |
|
UV portion[%]: |
3.0 |
|
Visible portion[%]: |
36.6 |
|
IR portion[%]: |
60.3 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
2.2 |
|
Apparent Magnitude: |
5.9 |
|
Right Ascension(RA) |
12.3081 |
|
Declination (DEC) |
-24.1367 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
06421-01078 |
|
Discovered by |
|
|
Discovery Paper - Authors |
|
|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
|
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+4732+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
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HD 4732 A b
HD 4732 A b
HD 4732 A b is an exoplanet orbiting the star HD 4732 A, located about 179.0 light-years (54.9 pc) away from Solar System. Its discovery was publicly announced on 2013.
The host star HD 4732 A has apparent magnitude of 5.9, with absolute magnitude of 2.2. It is 1.7 times more massive and 5.4 times bigger compared with our Sun. The surface temperature is 4959 with its spectral types of K0 IV
In this planetary system, the extrasolar planet HD 4732 A b orbits around the star HD 4732 A every 360.2 days with its orbital distance of 1.19 AU ( 178021466.1 km)
(Projected orbit of HD 4732 A b around its host star HD 4732 A)
The Star HD 4732 A 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 2.877 AU ( 430368115.9 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 3.977 AU ( 594881204.8 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 6.059 AU ( 906467309.2 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 8.917 AU ( 1333906355.3 km)
Radiation at Planetary Boundary of HD 4732 A b : 15271.26 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 4732 A)
Kopparapu Recent Venus for Star HD 4732 A distance : 3.118 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 4732 A distance : 3.948 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 4732 A distance : 3.813 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 4732 A distance : 4.185 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 4732 A distance : 7.167 AU
Kopparapu Outer Boundary for Early Mars for Star HD 4732 A distance : 7.560 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 4732 A)
Original Kopparapu Recent Venus for Star HD 4732 A distance : 3.084 AU
Original Kopparapu Runaway Greenhouse for Star HD 4732 A distance : 4.069 AU
Original Kopparapu Moist Greenhouse for Star HD 4732 A distance : 4.081 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 4732 A distance : 7.287 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 4732 A distance : 7.578 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 4732 A)
(Position in Stellar Map of star HD 4732 A and its Exoplanet HD 4732 A b)
(Zoomed position in Stellar Map of star HD 4732 A and its Exoplanet HD 4732 A b (zoom level 3))
(Synthetic Spectrum of star HD 4732 A*)
*Yamashiki YA et al. 2019 ApJ 881 114
MUSCLES Paper I - France et al. 2016 ApJ 820 89
MUSCLES Paper II- Youngblood et al. 2016 ApJ 824 101
MUSCLES Paper III- Loyd et al. 2016 ApJ 824 102
