Exoplanet Name : |
LP415-17 d |
Alternate Name : |
"EPIC 210897587 d, K2-155 d" |
Radius (Rjup / Re): |
0.1700 |
(Rjup) |
1.9055 |
(Rearth) |
Mass (Mjup / Me): |
0.0154 |
(Mjup) |
4.8962 |
(Mearth) |
Semi Major Axis / Orbital Distance Calculated |
0.1937 |
(AU) |
0.1937 |
(AU Est.) |
Eccentricity : |
0.0000 |
Orbital Period(Yrs) |
0.1115 |
Orbital Period(Observed/Estimated) |
40.72 |
(Days Obs.) |
38.62 |
(Days Est.) |
Star Radiation at Atmospheric Boundary: |
3614.3 |
(W/m2) |
Measured Temperature (K) |
0.0 |
(K) |
Blackbody T 0.1(K) |
346.1 |
(K) |
Blackbody T 0.3(K) |
325.0 |
(K) |
Blackbody T 0.7(K) |
262.9 |
(K) |
Tidally Locked Blackbody T 0.1(K) |
411.5 |
(K) |
Tidally Locked Blackbody T 0.3(K) |
386.5 |
(K) |
Size Class: |
sub-Neptune-size |
Mass Class: |
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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 : |
LP415-17 |
Alternate Name : |
"EPIC 210897587, 2MASS 04215245+21211, K2-155" |
Star Distance(LY) : |
267.4 |
Stellar Radius(Rsun) : |
0.6 |
(Rsun Measured) |
Stellar Mass(Msun) : |
0.7 |
(Msun Measured) |
0.6 |
(Msun Estimated) |
Star Age : |
0.0 |
(GY) |
Temperature : |
4258 |
(K) |
Spectral type : |
K6 |
Metalicity : |
-0.3 |
Absolute Magnitude: |
8.2 |
Apparent Magnitude: |
12.8 |
Right Ascension(RA) |
65.4687 |
Declination (DEC) |
21.3536 |
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 |
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Discovery Paper - URL |
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SIMBAD LINK |
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Open Exoplanet Database Link |
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LP415-17 d
LP415-17 d
LP415-17 d is an exoplanet orbiting the star LP415-17, located about 267.4 light-years (82.0 pc) away from Solar System. Its discovery was publicly announced on 2018.
The host star LP415-17 has apparent magnitude of 12.8, with absolute magnitude of 8.2. It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 4258 with its spectral types of K6
In this planetary system, the extrasolar planet LP415-17 d orbits around the star LP415-17 every 40.7 days with its orbital distance of 0.19 AU ( 28977107.6 km)
(Projected orbit of LP415-17 d around its host star LP415-17)
The Star LP415-17 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.228 AU ( 34079830.0 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.315 AU ( 47107231.2 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.480 AU ( 71780995.6 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.706 AU ( 105628879.6 km)
Radiation at Planetary Boundary of LP415-17 d : 3614.30 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star LP415-17)
Kopparapu Recent Venus for Star LP415-17 distance : 0.254 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star LP415-17 distance : 0.321 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star LP415-17 distance : 0.310 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star LP415-17 distance : 0.341 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star LP415-17 distance : 0.601 AU
Kopparapu Outer Boundary for Early Mars for Star LP415-17 distance : 0.634 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star LP415-17)
Original Kopparapu Recent Venus for Star LP415-17 distance : 0.250 AU
Original Kopparapu Runaway Greenhouse for Star LP415-17 distance : 0.332 AU
Original Kopparapu Moist Greenhouse for Star LP415-17 distance : 0.331 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star LP415-17 distance : 0.611 AU
Original Kopparapu Outer Boundary for Early Mars for Star LP415-17 distance : 0.636 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star LP415-17)
(Position in Stellar Map of star LP415-17 and its Exoplanet LP415-17 d)
(Zoomed position in Stellar Map of star LP415-17 and its Exoplanet LP415-17 d (zoom level 3))