|
Exoplanet Name : |
LHS 1478 b |
|
Alternate Name : |
TOI-1640 |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.1106 |
(Rjup) |
1.2397 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0073 |
(Mjup) |
2.3305 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0185 |
(AU) |
0.0185 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0053 |
|
Orbital Period(Observed/Estimated) |
1.95 |
(Days Obs.) |
1.89 |
(Days Est.) |
|
Surface Gravity (G Earth) |
1.5164 |
|
Star Radiation at Atmospheric Boundary: |
28395.6 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
579.4 |
(K) |
|
Blackbody T 0.3(K) |
544.1 |
(K) |
|
Blackbody T 0.7(K) |
440.2 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
689.0 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
647.0 |
(K) |
|
Size Class: |
super-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 1478 |
|
Alternate Name : |
TOI-1640 |
|
Star Distance(LY) : |
59.4 |
|
Stellar Radius(Rsun) : |
0.2 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.2 |
(Msun Measured) |
0.2 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
3381 |
(K) |
|
Spectral type : |
M3.5V |
|
UV portion[%]: |
0.3 |
|
Visible portion[%]: |
12.2 |
|
IR portion[%]: |
87.5 |
|
Metalicity : |
-0.1 |
|
Absolute Magnitude: |
11.7 |
|
Apparent Magnitude: |
13.0 |
|
Right Ascension(RA) |
44.3250 |
|
Declination (DEC) |
76.5536 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
|
|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
|
|
SIMBAD LINK |
https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LHS+1478&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
|
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LHS 1478 b
LHS 1478 b
LHS 1478 b is an exoplanet orbiting the star LHS 1478, located about 59.4 light-years (18.2 pc) away from Solar System. Its discovery was publicly announced on 2021.
The host star LHS 1478 has apparent magnitude of 13.0, with absolute magnitude of 11.7. It is 0.2 times more massive and 0.2 times bigger compared with our Sun. The surface temperature is 3381 with its spectral types of M3.5V
In this planetary system, the extrasolar planet LHS 1478 b orbits around the star LHS 1478 every 1.9 days with its orbital distance of 0.02 AU ( 2764568.7 km)
(Projected orbit of LHS 1478 b around its host star LHS 1478)
The Star LHS 1478 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.061 AU ( 9113465.7 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.084 AU ( 12597191.2 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.128 AU ( 19195331.6 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.189 AU ( 28246771.3 km)
Radiation at Planetary Boundary of LHS 1478 b : 28395.65 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star LHS 1478)
Kopparapu Recent Venus for Star LHS 1478 distance : 0.069 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star LHS 1478 distance : 0.087 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star LHS 1478 distance : 0.084 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star LHS 1478 distance : 0.093 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star LHS 1478 distance : 0.171 AU
Kopparapu Outer Boundary for Early Mars for Star LHS 1478 distance : 0.180 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star LHS 1478)
Original Kopparapu Recent Venus for Star LHS 1478 distance : 0.068 AU
Original Kopparapu Runaway Greenhouse for Star LHS 1478 distance : 0.090 AU
Original Kopparapu Moist Greenhouse for Star LHS 1478 distance : 0.091 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star LHS 1478 distance : 0.173 AU
Original Kopparapu Outer Boundary for Early Mars for Star LHS 1478 distance : 0.180 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star LHS 1478)
(Position in Stellar Map of star LHS 1478 and its Exoplanet LHS 1478 b)
(Zoomed position in Stellar Map of star LHS 1478 and its Exoplanet LHS 1478 b (zoom level 3))
(Synthetic Spectrum of star LHS 1478*)
*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
