|
Exoplanet Name : |
LHS 1815 b |
|
Alternate Name : |
TOI-704 b |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.0971 |
(Rjup) |
1.0881 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0132 |
(Mjup) |
4.1968 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0404 |
(AU) |
0.0404 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0104 |
|
Orbital Period(Observed/Estimated) |
3.81 |
(Days Obs.) |
4.19 |
(Days Est.) |
|
Surface Gravity (G Earth) |
3.5450 |
|
Star Radiation at Atmospheric Boundary: |
33216.5 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
602.5 |
(K) |
|
Blackbody T 0.3(K) |
565.8 |
(K) |
|
Blackbody T 0.7(K) |
457.8 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
716.5 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
672.9 |
(K) |
|
Size Class: |
Earth-size |
|
Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
Radial Velocity |
|
Radius Detection : |
Primary Transit |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
LHS 1815 |
|
Alternate Name : |
TOI-704 |
|
Star Distance(LY) : |
97.4 |
|
Stellar Radius(Rsun) : |
0.5 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.5 |
(Msun Measured) |
0.6 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
3643 |
(K) |
|
Spectral type : |
M3 |
|
UV portion[%]: |
0.4 |
|
Visible portion[%]: |
17.4 |
|
IR portion[%]: |
82.3 |
|
Metalicity : |
-0.1 |
|
Absolute Magnitude: |
9.8 |
|
Apparent Magnitude: |
12.2 |
|
Right Ascension(RA) |
91.0848 |
|
Declination (DEC) |
-55.3131 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
|
|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
|
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LHS+1815+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
|
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LHS 1815 b
LHS 1815 b
LHS 1815 b is an exoplanet orbiting the star LHS 1815, located about 97.4 light-years (29.9 pc) away from Solar System. Its discovery was publicly announced on 2020.
The host star LHS 1815 has apparent magnitude of 12.2, with absolute magnitude of 9.8. It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3643 with its spectral types of M3
In this planetary system, the extrasolar planet LHS 1815 b orbits around the star LHS 1815 every 3.8 days with its orbital distance of 0.04 AU ( 6043754.0 km)
(Projected orbit of LHS 1815 b around its host star LHS 1815)
The Star LHS 1815 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.144 AU ( 21548357.9 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.199 AU ( 29785461.9 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.303 AU ( 45386452.5 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.446 AU ( 66788153.0 km)
Radiation at Planetary Boundary of LHS 1815 b : 33216.53 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star LHS 1815)
Kopparapu Recent Venus for Star LHS 1815 distance : 0.162 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star LHS 1815 distance : 0.206 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star LHS 1815 distance : 0.198 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star LHS 1815 distance : 0.218 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star LHS 1815 distance : 0.397 AU
Kopparapu Outer Boundary for Early Mars for Star LHS 1815 distance : 0.419 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star LHS 1815)
Original Kopparapu Recent Venus for Star LHS 1815 distance : 0.161 AU
Original Kopparapu Runaway Greenhouse for Star LHS 1815 distance : 0.213 AU
Original Kopparapu Moist Greenhouse for Star LHS 1815 distance : 0.213 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star LHS 1815 distance : 0.403 AU
Original Kopparapu Outer Boundary for Early Mars for Star LHS 1815 distance : 0.420 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star LHS 1815)
(Position in Stellar Map of star LHS 1815 and its Exoplanet LHS 1815 b)
(Zoomed position in Stellar Map of star LHS 1815 and its Exoplanet LHS 1815 b (zoom level 3))
(Synthetic Spectrum of star LHS 1815*)
*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
