|
Exoplanet Name : |
HD 176986 b |
|
Alternate Name : |
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|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.1413 |
(Rjup) |
1.5841 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0181 |
(Mjup) |
5.7547 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0630 |
(AU) |
0.0630 |
(AU Est.) |
|
Eccentricity : |
0.0660 |
|
Orbital Period(Yrs) |
0.0178 |
|
Orbital Period(Observed/Estimated) |
6.49 |
(Days Obs.) |
6.50 |
(Days Est.) |
|
Surface Gravity (G Earth) |
2.2934 |
|
Star Radiation at Atmospheric Boundary: |
111848.2 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
816.2 |
(K) |
|
Blackbody T 0.3(K) |
766.5 |
(K) |
|
Blackbody T 0.7(K) |
620.2 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
970.6 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
911.5 |
(K) |
|
Size Class: |
super-Earth-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 : |
HD 176986 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
86.1 |
|
Stellar Radius(Rsun) : |
0.8 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.8 |
(Msun Measured) |
0.8 |
(Msun Estimated) |
|
Star Age : |
4.3 |
(GY) |
|
Temperature : |
4931 |
(K) |
|
Spectral type : |
K2.5V |
|
UV portion[%]: |
2.9 |
|
Visible portion[%]: |
36.4 |
|
IR portion[%]: |
60.7 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
6.3 |
|
Apparent Magnitude: |
8.4 |
|
Right Ascension(RA) |
285.7745 |
|
Declination (DEC) |
-11.0439 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
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Discovered by |
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|
Discovery Paper - Authors |
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|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
|
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+176986+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
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HD 176986 b
HD 176986 b
HD 176986 b is an exoplanet orbiting the star HD 176986, located about 86.1 light-years (26.4 pc) away from Solar System. Its discovery was publicly announced on 2017.
The host star HD 176986 has apparent magnitude of 8.4, with absolute magnitude of 6.3. It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4931 with its spectral types of K2.5V
In this planetary system, the extrasolar planet HD 176986 b orbits around the star HD 176986 every 6.5 days with its orbital distance of 0.06 AU ( 9418681.9 km)
(Projected orbit of HD 176986 b around its host star HD 176986)
The Star HD 176986 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.412 AU ( 61621869.6 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.569 AU ( 85177527.5 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.868 AU ( 129791702.2 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 1.277 AU ( 190994175.5 km)
Radiation at Planetary Boundary of HD 176986 b : 111848.17 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 176986)
Kopparapu Recent Venus for Star HD 176986 distance : 0.447 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 176986 distance : 0.566 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 176986 distance : 0.547 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 176986 distance : 0.600 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 176986 distance : 1.029 AU
Kopparapu Outer Boundary for Early Mars for Star HD 176986 distance : 1.085 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 176986)
Original Kopparapu Recent Venus for Star HD 176986 distance : 0.442 AU
Original Kopparapu Runaway Greenhouse for Star HD 176986 distance : 0.583 AU
Original Kopparapu Moist Greenhouse for Star HD 176986 distance : 0.585 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 176986 distance : 1.046 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 176986 distance : 1.088 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 176986)
(Position in Stellar Map of star HD 176986 and its Exoplanet HD 176986 b)
(Zoomed position in Stellar Map of star HD 176986 and its Exoplanet HD 176986 b (zoom level 3))
(Synthetic Spectrum of star HD 176986*)
*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
