|
Exoplanet Name : |
18 Del b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
10.3000 |
(Mjup) |
3274.7614 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
2.6000 |
(AU) |
2.6000 |
(AU Est.) |
|
Eccentricity : |
0.0800 |
|
Orbital Period(Yrs) |
2.7194 |
|
Orbital Period(Observed/Estimated) |
993.30 |
(Days Obs.) |
1009.69 |
(Days Est.) |
|
Surface Gravity (G Earth) |
31.6255 |
|
Star Radiation at Atmospheric Boundary: |
8055.0 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
422.8 |
(K) |
|
Blackbody T 0.3(K) |
397.1 |
(K) |
|
Blackbody T 0.7(K) |
321.3 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
502.8 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
472.2 |
(K) |
|
Size Class: |
Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Radial Velocity |
|
Mass Detection : |
Radial Velocity |
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
18 Del |
|
Alternate Name : |
|
|
Star Distance(LY) : |
245.6 |
|
Stellar Radius(Rsun) : |
8.5 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
2.3 |
(Msun Measured) |
2.4 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
4979 |
(K) |
|
Spectral type : |
G6III |
|
UV portion[%]: |
3.1 |
|
Visible portion[%]: |
36.8 |
|
IR portion[%]: |
60.0 |
|
Metalicity : |
-0.1 |
|
Absolute Magnitude: |
1.1 |
|
Apparent Magnitude: |
5.5 |
|
Right Ascension(RA) |
314.6083 |
|
Declination (DEC) |
10.8392 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
01107-02709 |
|
Discovered by |
Bunei Sato et al. |
|
Discovery Paper - Authors |
"Sato,un'ei; Izumiura,ideyuki; Toyota,ri; Kambe,iji; Ikoma,asahiro; Omiya,asashi; Masuda,eiji; Takeda,oichi; Murata,aisuke; Itoh,oichi; Ando,iroyasu; Yoshida,ichitoshi; Kokubo,iichiro; Ida,higeru;" |
|
Discovery Paper - Title |
"Planetary Companions around Three Intermediate-Mass G and K Giants: 18 Delphini, ¥¹¥ò¥» Aquilae, and HD 81688" |
|
Discovery Paper - Journal |
0 |
|
Discovery Paper - URL |
0 |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=18+Del++&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/18%20Del%20b/ |
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18 Del b
18 Del b
18 Del b is an exoplanet orbiting the star 18 Del, located about 245.6 light-years (75.3 pc) away from Solar System. Its discovery was publicly announced on 2008.
The host star 18 Del has apparent magnitude of 5.5, with absolute magnitude of 1.1. It is 2.3 times more massive and 8.5 times bigger compared with our Sun. The surface temperature is 4979 with its spectral types of G6III
In this planetary system, the extrasolar planet 18 Del b orbits around the star 18 Del every 993.3 days with its orbital distance of 2.60 AU ( 388954463.8 km)
(Projected orbit of 18 Del b around its host star 18 Del)
The Star 18 Del 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 4.565 AU ( 682906569.7 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 6.310 AU ( 943955344.1 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 9.615 AU ( 1438379047.6 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 14.149 AU ( 2116637779.8 km)
Radiation at Planetary Boundary of 18 Del b : 8054.98 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 18 Del)
Kopparapu Recent Venus for Star 18 Del distance : 4.943 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star 18 Del distance : 6.259 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 18 Del distance : 6.045 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star 18 Del distance : 6.634 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star 18 Del distance : 11.353 AU
Kopparapu Outer Boundary for Early Mars for Star 18 Del distance : 11.975 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star 18 Del)
Original Kopparapu Recent Venus for Star 18 Del distance : 4.890 AU
Original Kopparapu Runaway Greenhouse for Star 18 Del distance : 6.450 AU
Original Kopparapu Moist Greenhouse for Star 18 Del distance : 6.470 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 18 Del distance : 11.543 AU
Original Kopparapu Outer Boundary for Early Mars for Star 18 Del distance : 12.005 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star 18 Del)
(Position in Stellar Map of star 18 Del and its Exoplanet 18 Del b)
(Zoomed position in Stellar Map of star 18 Del and its Exoplanet 18 Del b (zoom level 3))
(Synthetic Spectrum of star 18 Del*)
*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
