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Exoplanet Name : |
LP 754-21 b |
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Alternate Name : |
CWISE J200813.66-124502.4 |
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Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.0000 |
(Rjup) |
0.0000 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0000 |
(Mjup) |
0.0000 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
4800.0000 |
(AU) |
4800.0000 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
448913.1030 |
|
Orbital Period(Observed/Estimated) |
163970000.00 |
(Days Obs.) |
173877012.50 |
(Days Est.) |
|
Surface Gravity (G Earth) |
nan |
|
Star Radiation at Atmospheric Boundary: |
0.0 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
1.7 |
(K) |
|
Blackbody T 0.3(K) |
1.6 |
(K) |
|
Blackbody T 0.7(K) |
1.3 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
2.1 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
1.9 |
(K) |
|
Size Class: |
Asteroid-size |
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Mass Class: |
|
|
Detection Type : |
Imaging |
|
Mass Detection : |
|
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
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Star Name : |
LP 754-21 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
188.1 |
|
Stellar Radius(Rsun) : |
0.5 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.5 |
(Msun Measured) |
0.5 |
(Msun Estimated) |
|
Star Age : |
14.0 |
(GY) |
|
Temperature : |
3639 |
(K) |
|
Spectral type : |
sdM1 |
|
UV portion[%]: |
0.3 |
|
Visible portion[%]: |
12.8 |
|
IR portion[%]: |
86.9 |
|
Metalicity : |
-0.8 |
|
Absolute Magnitude: |
9.9 |
|
Apparent Magnitude: |
13.7 |
|
Right Ascension(RA) |
302.0669 |
|
Declination (DEC) |
-12.7704 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
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Discovered by |
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|
Discovery Paper - Authors |
|
|
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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LP 754-21 b
LP 754-21 b
LP 754-21 b is an exoplanet orbiting the star LP 754-21, located about 188.1 light-years (57.7 pc) away from Solar System. Its discovery was publicly announced on 2024.
The host star LP 754-21 has apparent magnitude of 13.7, with absolute magnitude of 9.9. It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3639 with its spectral types of sdM1
In this planetary system, the extrasolar planet LP 754-21 b orbits around the star LP 754-21 every 163970000.0 days with its orbital distance of 4800.00 AU ( 718069779360.0 km)
(Projected orbit of LP 754-21 b around its host star LP 754-21)
The Star LP 754-21 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.141 AU ( 21028984.6 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.194 AU ( 29067552.3 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.296 AU ( 44292517.1 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.436 AU ( 65178379.2 km)
Radiation at Planetary Boundary of LP 754-21 b : 0.00 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star LP 754-21)
Kopparapu Recent Venus for Star LP 754-21 distance : 0.159 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star LP 754-21 distance : 0.201 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star LP 754-21 distance : 0.194 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star LP 754-21 distance : 0.213 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star LP 754-21 distance : 0.388 AU
Kopparapu Outer Boundary for Early Mars for Star LP 754-21 distance : 0.409 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star LP 754-21)
Original Kopparapu Recent Venus for Star LP 754-21 distance : 0.157 AU
Original Kopparapu Runaway Greenhouse for Star LP 754-21 distance : 0.208 AU
Original Kopparapu Moist Greenhouse for Star LP 754-21 distance : 0.208 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star LP 754-21 distance : 0.394 AU
Original Kopparapu Outer Boundary for Early Mars for Star LP 754-21 distance : 0.410 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star LP 754-21)
(Position in Stellar Map of star LP 754-21 and its Exoplanet LP 754-21 b)
(Zoomed position in Stellar Map of star LP 754-21 and its Exoplanet LP 754-21 b (zoom level 3))
(Synthetic Spectrum of star LP 754-21*)
*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
