|
Exoplanet Name : |
GJ 9714 Ab |
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Alternate Name : |
HD 199981 Ab |
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Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
9.4030 |
(Mjup) |
2989.5710 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
12.3190 |
(AU) |
12.3190 |
(AU Est.) |
|
Eccentricity : |
0.1550 |
|
Orbital Period(Yrs) |
52.6770 |
|
Orbital Period(Observed/Estimated) |
19240.80 |
(Days Obs.) |
19293.72 |
(Days Est.) |
|
Surface Gravity (G Earth) |
28.8713 |
|
Star Radiation at Atmospheric Boundary: |
1.2 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
46.4 |
(K) |
|
Blackbody T 0.3(K) |
43.6 |
(K) |
|
Blackbody T 0.7(K) |
35.3 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
55.2 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
51.8 |
(K) |
|
Size Class: |
Jupiter-size |
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Mass Class: |
|
|
Detection Type : |
"Radial Velocity, Astrometry" |
|
Mass Detection : |
Astrometry |
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Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
GJ 9714 A |
|
Alternate Name : |
"HD 199981, HD 199981 A" |
|
Star Distance(LY) : |
66.9 |
|
Stellar Radius(Rsun) : |
0.7 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.7 |
(Msun Measured) |
0.7 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
4263 |
(K) |
|
Spectral type : |
K6Vk |
|
UV portion[%]: |
0.9 |
|
Visible portion[%]: |
27.3 |
|
IR portion[%]: |
71.8 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
7.8 |
|
Apparent Magnitude: |
9.3 |
|
Right Ascension(RA) |
315.4129 |
|
Declination (DEC) |
-32.5245 |
|
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 9714 Ab
GJ 9714 Ab
GJ 9714 Ab is an exoplanet orbiting the star GJ 9714 A, located about 66.9 light-years (20.5 pc) away from Solar System. Its discovery was publicly announced on 2022.
The host star GJ 9714 A has apparent magnitude of 9.3, with absolute magnitude of 7.8. It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4263 with its spectral types of K6Vk
In this planetary system, the extrasolar planet GJ 9714 Ab orbits around the star GJ 9714 A every 19240.8 days with its orbital distance of 12.32 AU ( 1842896169.2 km)
(Projected orbit of GJ 9714 Ab around its host star GJ 9714 A)
The Star GJ 9714 A 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.261 AU ( 38989419.3 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.360 AU ( 53893566.7 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.549 AU ( 82121869.0 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.808 AU ( 120845927.7 km)
Radiation at Planetary Boundary of GJ 9714 Ab : 1.17 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 9714 A)
Kopparapu Recent Venus for Star GJ 9714 A distance : 0.290 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 9714 A distance : 0.367 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 9714 A distance : 0.355 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 9714 A distance : 0.390 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 9714 A distance : 0.688 AU
Kopparapu Outer Boundary for Early Mars for Star GJ 9714 A distance : 0.726 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 9714 A)
Original Kopparapu Recent Venus for Star GJ 9714 A distance : 0.286 AU
Original Kopparapu Runaway Greenhouse for Star GJ 9714 A distance : 0.379 AU
Original Kopparapu Moist Greenhouse for Star GJ 9714 A distance : 0.379 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 9714 A distance : 0.699 AU
Original Kopparapu Outer Boundary for Early Mars for Star GJ 9714 A distance : 0.727 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 9714 A)
(Position in Stellar Map of star GJ 9714 A and its Exoplanet GJ 9714 Ab)
(Zoomed position in Stellar Map of star GJ 9714 A and its Exoplanet GJ 9714 Ab (zoom level 3))
(Synthetic Spectrum of star GJ 9714 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
