|
Exoplanet Name : |
Qatar-4 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
1.5520 |
(Rjup) |
17.3964 |
(Rearth) |
|
Mass (Mjup / Me): |
5.8500 |
(Mjup) |
1859.9373 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0286 |
(AU) |
0.0286 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0049 |
|
Orbital Period(Observed/Estimated) |
1.81 |
(Days Obs.) |
1.81 |
(Days Est.) |
|
Surface Gravity (G Earth) |
6.1458 |
|
Star Radiation at Atmospheric Boundary: |
1381872.6 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
1530.2 |
(K) |
|
Blackbody T 0.3(K) |
1437.1 |
(K) |
|
Blackbody T 0.7(K) |
1162.7 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
1819.8 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
1709.0 |
(K) |
|
Size Class: |
Super-Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
Radial Velocity |
|
Radius Detection : |
Primary Transit |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
Qatar-4 |
|
Alternate Name : |
UCAC3 269-003518 |
|
Star Distance(LY) : |
1082.8 |
|
Stellar Radius(Rsun) : |
1.1 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.0 |
(Msun Measured) |
1.0 |
(Msun Estimated) |
|
Star Age : |
12.9 |
(GY) |
|
Temperature : |
5219 |
(K) |
|
Spectral type : |
K0 |
|
UV portion[%]: |
5.2 |
|
Visible portion[%]: |
40.4 |
|
IR portion[%]: |
54.4 |
|
Metalicity : |
0.2 |
|
Absolute Magnitude: |
14.4 |
|
Apparent Magnitude: |
22.0 |
|
Right Ascension(RA) |
4.8583 |
|
Declination (DEC) |
44.0275 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
|
|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
0 |
|
Discovery Paper - URL |
0 |
|
SIMBAD LINK |
|
|
Open Exoplanet Database Link |
|
 |
 |
 |
 |
/
Qatar-4 b
Qatar-4 b
Qatar-4 b is an exoplanet orbiting the star Qatar-4, located about 1082.8 light-years (332.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
The host star Qatar-4 has apparent magnitude of 22.0, with absolute magnitude of 14.4. It is 1.0 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5219 with its spectral types of K0
In this planetary system, the extrasolar planet Qatar-4 b orbits around the star Qatar-4 every 1.8 days with its orbital distance of 0.03 AU ( 4279995.1 km)
(Projected orbit of Qatar-4 b around its host star Qatar-4)
The Star Qatar-4 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.658 AU ( 98425487.3 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.909 AU ( 136049745.1 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.386 AU ( 207309703.8 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 2.039 AU ( 305065310.7 km)
Radiation at Planetary Boundary of Qatar-4 b : 1381872.64 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Qatar-4)
Kopparapu Recent Venus for Star Qatar-4 distance : 0.704 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star Qatar-4 distance : 0.891 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Qatar-4 distance : 0.861 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star Qatar-4 distance : 0.944 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star Qatar-4 distance : 1.602 AU
Kopparapu Outer Boundary for Early Mars for Star Qatar-4 distance : 1.690 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star Qatar-4)
Original Kopparapu Recent Venus for Star Qatar-4 distance : 0.698 AU
Original Kopparapu Runaway Greenhouse for Star Qatar-4 distance : 0.918 AU
Original Kopparapu Moist Greenhouse for Star Qatar-4 distance : 0.924 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Qatar-4 distance : 1.629 AU
Original Kopparapu Outer Boundary for Early Mars for Star Qatar-4 distance : 1.694 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star Qatar-4)
(Position in Stellar Map of star Qatar-4 and its Exoplanet Qatar-4 b)
(Zoomed position in Stellar Map of star Qatar-4 and its Exoplanet Qatar-4 b (zoom level 3))
(Synthetic Spectrum of star Qatar-4*)
*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
