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Exoplanet Name : |
GJ 328 c |
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Alternate Name : |
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Status : |
Confirmed |
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Radius (Rjup / Re): |
0.2341 |
(Rjup) |
2.6246 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0673 |
(Mjup) |
21.3972 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.6570 |
(AU) |
0.6570 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.6620 |
|
Orbital Period(Observed/Estimated) |
241.80 |
(Days Obs.) |
234.16 |
(Days Est.) |
|
Surface Gravity (G Earth) |
3.1063 |
|
Star Radiation at Atmospheric Boundary: |
239.3 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
175.5 |
(K) |
|
Blackbody T 0.3(K) |
164.9 |
(K) |
|
Blackbody T 0.7(K) |
133.4 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
208.8 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
196.1 |
(K) |
|
Size Class: |
sub-Neptune-size |
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Mass Class: |
|
|
Detection Type : |
Radial Velocity |
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Mass Detection : |
Radial Velocity |
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Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
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Habitability by Kopparapu: |
Not habitable |
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Star Name : |
GJ 328 |
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Alternate Name : |
|
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Star Distance(LY) : |
64.6 |
|
Stellar Radius(Rsun) : |
0.6 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
0.7 |
(Msun Measured) |
0.6 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
3900 |
(K) |
|
Spectral type : |
K7 |
|
UV portion[%]: |
0.6 |
|
Visible portion[%]: |
21.6 |
|
IR portion[%]: |
77.8 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
8.5 |
|
Apparent Magnitude: |
10.0 |
|
Right Ascension(RA) |
133.7833 |
|
Declination (DEC) |
1.5490 |
|
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 |
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|
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 328 c
GJ 328 c
GJ 328 c is an exoplanet orbiting the star GJ 328, located about 64.6 light-years (19.8 pc) away from Solar System. Its discovery was publicly announced on 2023.
The host star GJ 328 has apparent magnitude of 10.0, 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 3900 with its spectral types of K7
In this planetary system, the extrasolar planet GJ 328 c orbits around the star GJ 328 every 241.8 days with its orbital distance of 0.66 AU ( 98285801.0 km)
(Projected orbit of GJ 328 c around its host star GJ 328)
The Star GJ 328 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.199 AU ( 29745896.9 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.275 AU ( 41116603.1 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.419 AU ( 62652604.0 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.616 AU ( 92196051.4 km)
Radiation at Planetary Boundary of GJ 328 c : 239.34 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 328)
Kopparapu Recent Venus for Star GJ 328 distance : 0.223 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 328 distance : 0.283 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 328 distance : 0.273 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 328 distance : 0.300 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 328 distance : 0.539 AU
Kopparapu Outer Boundary for Early Mars for Star GJ 328 distance : 0.568 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 328)
Original Kopparapu Recent Venus for Star GJ 328 distance : 0.221 AU
Original Kopparapu Runaway Greenhouse for Star GJ 328 distance : 0.292 AU
Original Kopparapu Moist Greenhouse for Star GJ 328 distance : 0.292 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 328 distance : 0.547 AU
Original Kopparapu Outer Boundary for Early Mars for Star GJ 328 distance : 0.569 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 328)
(Position in Stellar Map of star GJ 328 and its Exoplanet GJ 328 c)
(Zoomed position in Stellar Map of star GJ 328 and its Exoplanet GJ 328 c (zoom level 3))
(Synthetic Spectrum of star GJ 328*)
*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
