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Exoplanet Name : |
LP 791-18 d |
|
Alternate Name : |
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Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.0919 |
(Rjup) |
1.0301 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0028 |
(Mjup) |
0.8902 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0000 |
(AU) |
0.0000 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0000 |
|
Orbital Period(Observed/Estimated) |
0.00 |
(Days Obs.) |
0.00 |
(Days Est.) |
|
Surface Gravity (G Earth) |
0.8389 |
|
Star Radiation at Atmospheric Boundary: |
0.0 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
0.0 |
(K) |
|
Blackbody T 0.3(K) |
0.0 |
(K) |
|
Blackbody T 0.7(K) |
0.0 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
0.0 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
0.0 |
(K) |
|
Size Class: |
Earth-size |
|
Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
TTV |
|
Radius Detection : |
Primary Transit |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
LP 791-18 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
86.4 |
|
Stellar Radius(Rsun) : |
0.2 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.1 |
(Msun Measured) |
0.0 |
(Msun Estimated) |
|
Star Age : |
0.5 |
(GY) |
|
Temperature : |
2960 |
(K) |
|
Spectral type : |
M6V |
|
UV portion[%]: |
0.1 |
|
Visible portion[%]: |
3.5 |
|
IR portion[%]: |
96.4 |
|
Metalicity : |
-0.1 |
|
Absolute Magnitude: |
14.8 |
|
Apparent Magnitude: |
16.9 |
|
Right Ascension(RA) |
165.6917 |
|
Declination (DEC) |
-16.4061 |
|
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 |
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|
Open Exoplanet Database Link |
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 |
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LP 791-18 d
LP 791-18 d
LP 791-18 d is an exoplanet orbiting the star LP 791-18, located about 86.4 light-years (26.5 pc) away from Solar System. Its discovery was publicly announced on 2023.
The host star LP 791-18 has apparent magnitude of 16.9, with absolute magnitude of 14.8. It is 0.1 times more massive and 0.2 times bigger compared with our Sun. The surface temperature is 2960 with its spectral types of M6V
(Projected orbit of LP 791-18 d around its host star LP 791-18)
The Star LP 791-18 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.032 AU ( 4827146.2 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.045 AU ( 6672377.6 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.068 AU ( 10167226.8 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.100 AU ( 14961519.7 km)
Radiation at Planetary Boundary of LP 791-18 d : 0.00 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star LP 791-18)
Kopparapu Recent Venus for Star LP 791-18 distance : 0.037 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star LP 791-18 distance : 0.046 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star LP 791-18 distance : 0.045 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star LP 791-18 distance : 0.049 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star LP 791-18 distance : 0.093 AU
Kopparapu Outer Boundary for Early Mars for Star LP 791-18 distance : 0.098 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star LP 791-18)
Original Kopparapu Recent Venus for Star LP 791-18 distance : 0.037 AU
Original Kopparapu Runaway Greenhouse for Star LP 791-18 distance : 0.048 AU
Original Kopparapu Moist Greenhouse for Star LP 791-18 distance : 0.048 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star LP 791-18 distance : 0.094 AU
Original Kopparapu Outer Boundary for Early Mars for Star LP 791-18 distance : 0.098 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star LP 791-18)
(Position in Stellar Map of star LP 791-18 and its Exoplanet LP 791-18 d)
(Zoomed position in Stellar Map of star LP 791-18 and its Exoplanet LP 791-18 d (zoom level 3))
(Synthetic Spectrum of star LP 791-18*)
*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
