|
Exoplanet Name : |
GJ 752 A b |
|
Alternate Name : |
HD 180617 b |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.2058 |
(Rjup) |
2.3068 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0384 |
(Mjup) |
12.2088 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.3357 |
(AU) |
0.3357 |
(AU Est.) |
|
Eccentricity : |
0.1600 |
|
Orbital Period(Yrs) |
0.2899 |
|
Orbital Period(Observed/Estimated) |
105.90 |
(Days Obs.) |
105.90 |
(Days Est.) |
|
Surface Gravity (G Earth) |
2.2943 |
|
Star Radiation at Atmospheric Boundary: |
357.5 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
194.1 |
(K) |
|
Blackbody T 0.3(K) |
182.2 |
(K) |
|
Blackbody T 0.7(K) |
147.5 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
230.8 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
216.7 |
(K) |
|
Size Class: |
sub-Neptune-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 : |
GJ 752 A |
|
Alternate Name : |
"HD 180617, 2MASS J19165526+0510086" |
|
Star Distance(LY) : |
19.3 |
|
Stellar Radius(Rsun) : |
0.5 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.5 |
(Msun Measured) |
0.5 |
(Msun Estimated) |
|
Star Age : |
5.5 |
(GY) |
|
Temperature : |
3557 |
(K) |
|
Spectral type : |
M2.5 V |
|
UV portion[%]: |
0.3 |
|
Visible portion[%]: |
15.8 |
|
IR portion[%]: |
83.9 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
10.3 |
|
Apparent Magnitude: |
9.1 |
|
Right Ascension(RA) |
289.2302 |
|
Declination (DEC) |
5.1689 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
00472-01252 |
|
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=GJ+752+A+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
|
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GJ 752 A b
GJ 752 A b
GJ 752 A b is an exoplanet orbiting the star GJ 752 A, located about 19.3 light-years ( 5.9 pc) away from Solar System. Its discovery was publicly announced on 2018.
The host star GJ 752 A has apparent magnitude of 9.1, with absolute magnitude of 10.3. It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3557 with its spectral types of M2.5 V
In this planetary system, the extrasolar planet GJ 752 A b orbits around the star GJ 752 A every 105.9 days with its orbital distance of 0.34 AU ( 50220005.2 km)
(Projected orbit of GJ 752 A b around its host star GJ 752 A)
The Star GJ 752 A 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.124 AU ( 18574795.7 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.172 AU ( 25675221.8 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.262 AU ( 39123356.1 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.385 AU ( 57571732.3 km)
Radiation at Planetary Boundary of GJ 752 A b : 357.47 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 752 A)
Kopparapu Recent Venus for Star GJ 752 A distance : 0.140 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 752 A distance : 0.177 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 752 A distance : 0.171 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 752 A distance : 0.188 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 752 A distance : 0.344 AU
Kopparapu Outer Boundary for Early Mars for Star GJ 752 A distance : 0.363 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 752 A)
Original Kopparapu Recent Venus for Star GJ 752 A distance : 0.139 AU
Original Kopparapu Runaway Greenhouse for Star GJ 752 A distance : 0.184 AU
Original Kopparapu Moist Greenhouse for Star GJ 752 A distance : 0.184 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 752 A distance : 0.350 AU
Original Kopparapu Outer Boundary for Early Mars for Star GJ 752 A distance : 0.364 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 752 A)
(Position in Stellar Map of star GJ 752 A and its Exoplanet GJ 752 A b)
(Zoomed position in Stellar Map of star GJ 752 A and its Exoplanet GJ 752 A b (zoom level 3))
(Synthetic Spectrum of star GJ 752 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
