|
Exoplanet Name : |
TRAPPIST-1 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.0969 |
(Rjup) |
1.0860 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0027 |
(Mjup) |
0.8584 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0111 |
(AU) |
0.0111 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0041 |
|
Orbital Period(Observed/Estimated) |
1.51 |
(Days Obs.) |
1.51 |
(Days Est.) |
|
Surface Gravity (G Earth) |
0.7278 |
|
Star Radiation at Atmospheric Boundary: |
5841.3 |
(W/m2) |
|
Measured Temperature (K) |
503.0 |
(K) |
|
Blackbody T 0.1(K) |
390.2 |
(K) |
|
Blackbody T 0.3(K) |
366.4 |
(K) |
|
Blackbody T 0.7(K) |
296.5 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
464.0 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
435.8 |
(K) |
|
Size Class: |
Earth-size |
|
Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
TTV |
|
Radius Detection : |
Primary Transit |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
TRAPPIST-1 |
|
Alternate Name : |
2MASS J23062928-0502285 |
|
Star Distance(LY) : |
39.5 |
|
Stellar Radius(Rsun) : |
0.1 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.1 |
(Msun Measured) |
0.1 |
(Msun Estimated) |
|
Star Age : |
7.6 |
(GY) |
|
Temperature : |
2560 |
(K) |
|
Spectral type : |
M8 |
|
UV portion[%]: |
0.5 |
|
Visible portion[%]: |
1.5 |
|
IR portion[%]: |
98.1 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
18.4 |
|
Apparent Magnitude: |
18.8 |
|
Right Ascension(RA) |
346.6223 |
|
Declination (DEC) |
-5.0414 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
"Micha_l Gillon, Emmanu_l Jehin1, Susan M. Lederer, Laetitia Delrez, Val_rie Van Grootel, Adam J. Burgasser, Amaury H. M. J. Triaud, Cyrielle Julien de Wit, Artem Burdanov, Opitom, Brice-Olivier Demory, " |
|
Discovery Paper - Title |
Temperate Earth-sized planets transiting a nearby ultracool dwarf star |
|
Discovery Paper - Journal |
http://www.eso.org/public/archives/releases/sciencepapers/eso1615/eso1615a.pdf |
|
Discovery Paper - URL |
0 |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=TRAPPIST-1&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/TRAPPIST-1%20b/ |
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TRAPPIST-1 b
TRAPPIST-1 b
TRAPPIST-1 b is an exoplanet orbiting the star TRAPPIST-1, located about 39.5 light-years (12.1 pc) away from Solar System. Its discovery was publicly announced on 2016.
The host star TRAPPIST-1 has apparent magnitude of 18.8, with absolute magnitude of 18.4. It is 0.1 times more massive and 0.1 times bigger compared with our Sun. The surface temperature is 2560 with its spectral types of M8
In this planetary system, the extrasolar planet TRAPPIST-1 b orbits around the star TRAPPIST-1 every 1.5 days with its orbital distance of 0.01 AU ( 1662032.3 km)
(Projected orbit of TRAPPIST-1 b around its host star TRAPPIST-1)
The Star TRAPPIST-1 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.017 AU ( 2484985.8 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.023 AU ( 3434899.7 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.035 AU ( 5234027.0 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.051 AU ( 7702100.1 km)
Radiation at Planetary Boundary of TRAPPIST-1 b : 5841.28 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TRAPPIST-1)
Kopparapu Recent Venus for Star TRAPPIST-1 distance : 0.019 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star TRAPPIST-1 distance : 0.024 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TRAPPIST-1 distance : 0.023 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star TRAPPIST-1 distance : 0.026 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star TRAPPIST-1 distance : 0.049 AU
Kopparapu Outer Boundary for Early Mars for Star TRAPPIST-1 distance : 0.051 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star TRAPPIST-1)
Original Kopparapu Recent Venus for Star TRAPPIST-1 distance : 0.019 AU
Original Kopparapu Runaway Greenhouse for Star TRAPPIST-1 distance : 0.025 AU
Original Kopparapu Moist Greenhouse for Star TRAPPIST-1 distance : 0.025 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TRAPPIST-1 distance : 0.050 AU
Original Kopparapu Outer Boundary for Early Mars for Star TRAPPIST-1 distance : 0.052 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star TRAPPIST-1)
(Position in Stellar Map of star TRAPPIST-1 and its Exoplanet TRAPPIST-1 b)
(Zoomed position in Stellar Map of star TRAPPIST-1 and its Exoplanet TRAPPIST-1 b (zoom level 3))
(Synthetic Spectrum of star TRAPPIST-1*)
*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
