|
Exoplanet Name : |
HD 187123 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
0.5200 |
(Mjup) |
165.3278 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0426 |
(AU) |
0.0426 |
(AU Est.) |
|
Eccentricity : |
0.0100 |
|
Orbital Period(Yrs) |
0.0085 |
|
Orbital Period(Observed/Estimated) |
3.10 |
(Days Obs.) |
3.12 |
(Days Est.) |
|
Surface Gravity (G Earth) |
1.5966 |
|
Star Radiation at Atmospheric Boundary: |
986093.9 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
1406.4 |
(K) |
|
Blackbody T 0.3(K) |
1320.8 |
(K) |
|
Blackbody T 0.7(K) |
1068.7 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
1672.6 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
1570.7 |
(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 187123 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
157.4 |
|
Stellar Radius(Rsun) : |
1.2 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.1 |
(Msun Measured) |
1.1 |
(Msun Estimated) |
|
Star Age : |
5.3 |
(GY) |
|
Temperature : |
5714 |
(K) |
|
Spectral type : |
G5 |
|
UV portion[%]: |
7.6 |
|
Visible portion[%]: |
44.5 |
|
IR portion[%]: |
47.9 |
|
Metalicity : |
0.2 |
|
Absolute Magnitude: |
4.4 |
|
Apparent Magnitude: |
7.9 |
|
Right Ascension(RA) |
296.7421 |
|
Declination (DEC) |
34.4208 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
02664-00550 |
|
Discovered by |
|
|
Discovery Paper - Authors |
"Feng,.atherina; Wright,ason.; Nelson,enjamin; Wang,haron.; Ford,ric.; Marcy,eoffrey.; Isaacson,oward; Howard,ndrew." |
|
Discovery Paper - Title |
The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets |
|
Discovery Paper - Journal |
"The Astrophysical Journal,olume 800,umber 1" |
|
Discovery Paper - URL |
http://iopscience.iop.org/article/10.1088/0004-637X/800/1/22/meta |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+187123+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/HD%20187123%20b/ |
 |
 |
 |
 |
/
HD 187123 b
HD 187123 b
HD 187123 b is an exoplanet orbiting the star HD 187123, located about 157.4 light-years (48.3 pc) away from Solar System. Its discovery was publicly announced on 1998.
The host star HD 187123 has apparent magnitude of 7.9, with absolute magnitude of 4.4. It is 1.1 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5714 with its spectral types of G5
In this planetary system, the extrasolar planet HD 187123 b orbits around the star HD 187123 every 3.1 days with its orbital distance of 0.04 AU ( 6372869.3 km)
(Projected orbit of HD 187123 b around its host star HD 187123)
The Star HD 187123 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.828 AU ( 123801083.7 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 1.144 AU ( 171125450.8 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.743 AU ( 260757317.0 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 2.565 AU ( 383715815.0 km)
Radiation at Planetary Boundary of HD 187123 b : 986093.92 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 187123)
Kopparapu Recent Venus for Star HD 187123 distance : 0.861 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 187123 distance : 1.090 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 187123 distance : 1.053 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 187123 distance : 1.155 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 187123 distance : 1.929 AU
Kopparapu Outer Boundary for Early Mars for Star HD 187123 distance : 2.034 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 187123)
Original Kopparapu Recent Venus for Star HD 187123 distance : 0.861 AU
Original Kopparapu Runaway Greenhouse for Star HD 187123 distance : 1.121 AU
Original Kopparapu Moist Greenhouse for Star HD 187123 distance : 1.139 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 187123 distance : 1.963 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 187123 distance : 2.041 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 187123)
(Position in Stellar Map of star HD 187123 and its Exoplanet HD 187123 b)
(Zoomed position in Stellar Map of star HD 187123 and its Exoplanet HD 187123 b (zoom level 3))
(Synthetic Spectrum of star HD 187123*)
*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
