|
Exoplanet Name : |
WASP-18 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
1.1650 |
(Rjup) |
13.0585 |
(Rearth) |
|
Mass (Mjup / Me): |
10.4296 |
(Mjup) |
3315.9662 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0205 |
(AU) |
0.0205 |
(AU Est.) |
|
Eccentricity : |
0.0088 |
|
Orbital Period(Yrs) |
0.0026 |
|
Orbital Period(Observed/Estimated) |
0.94 |
(Days Obs.) |
0.96 |
(Days Est.) |
|
Surface Gravity (G Earth) |
19.4457 |
|
Star Radiation at Atmospheric Boundary: |
7428467.8 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
2330.1 |
(K) |
|
Blackbody T 0.3(K) |
2188.2 |
(K) |
|
Blackbody T 0.7(K) |
1770.5 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
2770.9 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
2602.2 |
(K) |
|
Size Class: |
Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
|
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
WASP-18 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
326.2 |
|
Stellar Radius(Rsun) : |
1.2 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.2 |
(Msun Measured) |
1.3 |
(Msun Estimated) |
|
Star Age : |
0.6 |
(GY) |
|
Temperature : |
6400 |
(K) |
|
Spectral type : |
F6 |
|
UV portion[%]: |
7.8 |
|
Visible portion[%]: |
44.8 |
|
IR portion[%]: |
47.4 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
4.3 |
|
Apparent Magnitude: |
9.3 |
|
Right Ascension(RA) |
24.3543 |
|
Declination (DEC) |
-45.6778 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
08040-00072 |
|
Discovered by |
|
|
Discovery Paper - Authors |
"John Southworth, T. C. Hinse, M. Dominik, M. Glitrup, U. G. J_rgensen, C. Liebig, M. Mathiasen, D. R. Anderson, V. Bozza, P. Browne" |
|
Discovery Paper - Title |
PHYSICAL PROPERTIES OF THE 0.94-DAY PERIOD TRANSITING PLANETARY SYSTEM WASP-18 |
|
Discovery Paper - Journal |
"The Astrophysical Journal,olume 707,umber 1" |
|
Discovery Paper - URL |
http://iopscience.iop.org/article/10.1088/0004-637X/707/1/167/meta |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WASP-18+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/WASP-18%20b/ |
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WASP-18 b
WASP-18 b
WASP-18 b is an exoplanet orbiting the star WASP-18, located about 326.2 light-years (100.0 pc) away from Solar System. Its discovery was publicly announced on 2009.
The host star WASP-18 has apparent magnitude of 9.3, with absolute magnitude of 4.3. It is 1.2 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 6400 with its spectral types of F6
In this planetary system, the extrasolar planet WASP-18 b orbits around the star WASP-18 every 0.9 days with its orbital distance of 0.02 AU ( 3062268.4 km)
(Projected orbit of WASP-18 b around its host star WASP-18)
The Star WASP-18 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 1.091 AU ( 163276308.1 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 1.509 AU ( 225690527.0 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 2.299 AU ( 343902418.0 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 3.383 AU ( 506067473.4 km)
Radiation at Planetary Boundary of WASP-18 b : 7428467.78 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star WASP-18)
Kopparapu Recent Venus for Star WASP-18 distance : 1.089 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star WASP-18 distance : 1.380 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star WASP-18 distance : 1.332 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star WASP-18 distance : 1.460 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star WASP-18 distance : 2.404 AU
Kopparapu Outer Boundary for Early Mars for Star WASP-18 distance : 2.535 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star WASP-18)
Original Kopparapu Recent Venus for Star WASP-18 distance : 1.106 AU
Original Kopparapu Runaway Greenhouse for Star WASP-18 distance : 1.415 AU
Original Kopparapu Moist Greenhouse for Star WASP-18 distance : 1.463 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star WASP-18 distance : 2.447 AU
Original Kopparapu Outer Boundary for Early Mars for Star WASP-18 distance : 2.545 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star WASP-18)
(Position in Stellar Map of star WASP-18 and its Exoplanet WASP-18 b)
(Zoomed position in Stellar Map of star WASP-18 and its Exoplanet WASP-18 b (zoom level 3))
(Synthetic Spectrum of star WASP-18*)
*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
