|
Exoplanet Name : |
GJ 3470 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.3738 |
(Rjup) |
4.1900 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0396 |
(Mjup) |
12.5840 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0356 |
(AU) |
0.0356 |
(AU Est.) |
|
Eccentricity : |
0.1140 |
|
Orbital Period(Yrs) |
0.0091 |
|
Orbital Period(Observed/Estimated) |
3.34 |
(Days Obs.) |
3.43 |
(Days Est.) |
|
Surface Gravity (G Earth) |
0.7168 |
|
Star Radiation at Atmospheric Boundary: |
39723.1 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
630.1 |
(K) |
|
Blackbody T 0.3(K) |
591.7 |
(K) |
|
Blackbody T 0.7(K) |
478.8 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
749.3 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
703.7 |
(K) |
|
Size Class: |
Neptune-size |
|
Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
|
|
Radius Detection : |
Primary Transit |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
GJ 3470 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
100.1 |
|
Stellar Radius(Rsun) : |
0.5 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.5 |
(Msun Measured) |
0.5 |
(Msun Estimated) |
|
Star Age : |
1.6 |
(GY) |
|
Temperature : |
3652 |
(K) |
|
Spectral type : |
M1.5 |
|
UV portion[%]: |
0.4 |
|
Visible portion[%]: |
17.5 |
|
IR portion[%]: |
82.1 |
|
Metalicity : |
0.2 |
|
Absolute Magnitude: |
9.9 |
|
Apparent Magnitude: |
12.3 |
|
Right Ascension(RA) |
119.7743 |
|
Declination (DEC) |
15.3917 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
0 |
|
Discovery Paper - Title |
0 |
|
Discovery Paper - Journal |
0 |
|
Discovery Paper - URL |
0 |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GJ+3470+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
0 |
 |
 |
 |
 |
/
GJ 3470 b
GJ 3470 b
GJ 3470 b is an exoplanet orbiting the star GJ 3470, located about 100.1 light-years (30.7 pc) away from Solar System. Its discovery was publicly announced on 2012.
The host star GJ 3470 has apparent magnitude of 12.3, with absolute magnitude of 9.9. It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3652 with its spectral types of M1.5
In this planetary system, the extrasolar planet GJ 3470 b orbits around the star GJ 3470 every 3.3 days with its orbital distance of 0.04 AU ( 5321196.3 km)
(Projected orbit of GJ 3470 b around its host star GJ 3470)
The Star GJ 3470 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.139 AU ( 20747266.6 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.192 AU ( 28678144.3 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.292 AU ( 43699145.5 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.430 AU ( 64305207.0 km)
Radiation at Planetary Boundary of GJ 3470 b : 39723.05 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 3470)
Kopparapu Recent Venus for Star GJ 3470 distance : 0.156 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 3470 distance : 0.198 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 3470 distance : 0.191 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 3470 distance : 0.210 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 3470 distance : 0.382 AU
Kopparapu Outer Boundary for Early Mars for Star GJ 3470 distance : 0.403 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 3470)
Original Kopparapu Recent Venus for Star GJ 3470 distance : 0.155 AU
Original Kopparapu Runaway Greenhouse for Star GJ 3470 distance : 0.205 AU
Original Kopparapu Moist Greenhouse for Star GJ 3470 distance : 0.205 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 3470 distance : 0.388 AU
Original Kopparapu Outer Boundary for Early Mars for Star GJ 3470 distance : 0.404 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 3470)
(Position in Stellar Map of star GJ 3470 and its Exoplanet GJ 3470 b)
(Zoomed position in Stellar Map of star GJ 3470 and its Exoplanet GJ 3470 b (zoom level 3))
(Synthetic Spectrum of star GJ 3470*)
*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
