|
Exoplanet Name : |
GJ 676 Ab |
|
Alternate Name : |
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Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
5.7920 |
(Mjup) |
1841.4969 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
1.7350 |
(AU) |
1.7350 |
(AU Est.) |
|
Eccentricity : |
0.3190 |
|
Orbital Period(Yrs) |
2.8785 |
|
Orbital Period(Observed/Estimated) |
1051.40 |
(Days Obs.) |
990.63 |
(Days Est.) |
|
Surface Gravity (G Earth) |
17.7839 |
|
Star Radiation at Atmospheric Boundary: |
30.7 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
105.1 |
(K) |
|
Blackbody T 0.3(K) |
98.7 |
(K) |
|
Blackbody T 0.7(K) |
79.8 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
124.9 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
117.3 |
(K) |
|
Size Class: |
Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
"Radial Velocity, Astrometry" |
|
Mass Detection : |
Astrometry |
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
GJ 676 A |
|
Alternate Name : |
|
|
Star Distance(LY) : |
53.7 |
|
Stellar Radius(Rsun) : |
0.6 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
0.7 |
(Msun Measured) |
0.6 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
3750 |
(K) |
|
Spectral type : |
M0V |
|
UV portion[%]: |
0.4 |
|
Visible portion[%]: |
19.1 |
|
IR portion[%]: |
80.5 |
|
Metalicity : |
0.2 |
|
Absolute Magnitude: |
8.5 |
|
Apparent Magnitude: |
9.6 |
|
Right Ascension(RA) |
262.5458 |
|
Declination (DEC) |
-51.6369 |
|
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 |
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|
SIMBAD LINK |
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|
Open Exoplanet Database Link |
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GJ 676 Ab
GJ 676 Ab
GJ 676 Ab is an exoplanet orbiting the star GJ 676 A, located about 53.7 light-years (16.4 pc) away from Solar System. Its discovery was publicly announced on 2009.
The host star GJ 676 A has apparent magnitude of 9.6, with absolute magnitude of 8.5. It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3750 with its spectral types of M0V
In this planetary system, the extrasolar planet GJ 676 Ab orbits around the star GJ 676 A every 1051.4 days with its orbital distance of 1.74 AU ( 259552305.7 km)
(Projected orbit of GJ 676 Ab around its host star GJ 676 A)
The Star GJ 676 A 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.188 AU ( 28136347.1 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.260 AU ( 38891784.6 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.396 AU ( 59262473.0 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.583 AU ( 87207325.2 km)
Radiation at Planetary Boundary of GJ 676 Ab : 30.71 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 676 A)
Kopparapu Recent Venus for Star GJ 676 A distance : 0.212 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 676 A distance : 0.268 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 676 A distance : 0.259 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 676 A distance : 0.285 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 676 A distance : 0.515 AU
Kopparapu Outer Boundary for Early Mars for Star GJ 676 A distance : 0.543 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 676 A)
Original Kopparapu Recent Venus for Star GJ 676 A distance : 0.210 AU
Original Kopparapu Runaway Greenhouse for Star GJ 676 A distance : 0.277 AU
Original Kopparapu Moist Greenhouse for Star GJ 676 A distance : 0.277 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 676 A distance : 0.523 AU
Original Kopparapu Outer Boundary for Early Mars for Star GJ 676 A distance : 0.544 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 676 A)
(Position in Stellar Map of star GJ 676 A and its Exoplanet GJ 676 Ab)
(Zoomed position in Stellar Map of star GJ 676 A and its Exoplanet GJ 676 Ab (zoom level 3))
(Synthetic Spectrum of star GJ 676 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
