|
Exoplanet Name : |
LP 261-75 b |
|
Alternate Name : |
"2MASS J09510459+3558098 b, NLTT 22741 b" |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
21.0000 |
(Mjup) |
6676.6980 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
450.0000 |
(AU) |
450.0000 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0000 |
|
Orbital Period(Observed/Estimated) |
0.00 |
(Days Obs.) |
7433573.76 |
(Days Est.) |
|
Surface Gravity (G Earth) |
64.4791 |
|
Star Radiation at Atmospheric Boundary: |
0.0 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
3.7 |
(K) |
|
Blackbody T 0.3(K) |
3.5 |
(K) |
|
Blackbody T 0.7(K) |
2.8 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
4.5 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
4.2 |
(K) |
|
Size Class: |
Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Imaging |
|
Mass Detection : |
Spectrum |
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
LP 261-75 |
|
Alternate Name : |
"2MASS J09510459+3558098, NLTT 22741" |
|
Star Distance(LY) : |
110.8 |
|
Stellar Radius(Rsun) : |
0.2 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
0.2 |
(Msun Measured) |
0.0 |
(Msun Estimated) |
|
Star Age : |
0.1 |
(GY) |
|
Temperature : |
3400 |
(K) |
|
Spectral type : |
M4.5 |
|
UV portion[%]: |
0.2 |
|
Visible portion[%]: |
10.9 |
|
IR portion[%]: |
88.8 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
12.7 |
|
Apparent Magnitude: |
15.3 |
|
Right Ascension(RA) |
147.7691 |
|
Declination (DEC) |
35.9693 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
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Discovered by |
|
|
Discovery Paper - Authors |
|
|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
|
|
SIMBAD LINK |
|
|
Open Exoplanet Database Link |
|
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 |
 |
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LP 261-75 b
LP 261-75 b
LP 261-75 b is an exoplanet orbiting the star LP 261-75, located about 110.8 light-years (34.0 pc) away from Solar System. Its discovery was publicly announced on 2006.
The host star LP 261-75 has apparent magnitude of 15.3, with absolute magnitude of 12.7. It is 0.2 times more massive and 0.2 times bigger compared with our Sun. The surface temperature is 3400 with its spectral types of M4.5
(Projected orbit of LP 261-75 b around its host star LP 261-75)
The Star LP 261-75 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.062 AU ( 9270494.9 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.086 AU ( 12814246.6 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.131 AU ( 19526076.0 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.192 AU ( 28733476.3 km)
Radiation at Planetary Boundary of LP 261-75 b : 0.00 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star LP 261-75)
Kopparapu Recent Venus for Star LP 261-75 distance : 0.070 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star LP 261-75 distance : 0.089 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star LP 261-75 distance : 0.086 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star LP 261-75 distance : 0.094 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star LP 261-75 distance : 0.173 AU
Kopparapu Outer Boundary for Early Mars for Star LP 261-75 distance : 0.183 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star LP 261-75)
Original Kopparapu Recent Venus for Star LP 261-75 distance : 0.070 AU
Original Kopparapu Runaway Greenhouse for Star LP 261-75 distance : 0.092 AU
Original Kopparapu Moist Greenhouse for Star LP 261-75 distance : 0.092 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star LP 261-75 distance : 0.176 AU
Original Kopparapu Outer Boundary for Early Mars for Star LP 261-75 distance : 0.183 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star LP 261-75)
(Position in Stellar Map of star LP 261-75 and its Exoplanet LP 261-75 b)
(Zoomed position in Stellar Map of star LP 261-75 and its Exoplanet LP 261-75 b (zoom level 3))
(Synthetic Spectrum of star LP 261-75*)
*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
