Exoplanet Name : |
TOI-1742 b |
Alternate Name : |
HD 156141 b |
Status : |
Confirmed |
Radius (Rjup / Re): |
0.2114 |
(Rjup) |
2.3696 |
(Rearth) |
Mass (Mjup / Me): |
0.0305 |
(Mjup) |
9.6971 |
(Mearth) |
Semi Major Axis / Orbital Distance Calculated |
0.1540 |
(AU) |
0.1540 |
(AU Est.) |
Eccentricity : |
0.3000 |
Orbital Period(Yrs) |
0.0582 |
Orbital Period(Observed/Estimated) |
21.27 |
(Days Obs.) |
0.00 |
(Days Est.) |
Surface Gravity (G Earth) |
1.7270 |
Star Radiation at Atmospheric Boundary: |
1152.7 |
(W/m2) |
Measured Temperature (K) |
0.0 |
(K) |
Blackbody T 0.1(K) |
260.1 |
(K) |
Blackbody T 0.3(K) |
244.2 |
(K) |
Blackbody T 0.7(K) |
197.6 |
(K) |
Tidally Locked Blackbody T 0.1(K) |
309.3 |
(K) |
Tidally Locked Blackbody T 0.3(K) |
290.4 |
(K) |
Size Class: |
sub-Neptune-size |
Mass Class: |
|
Detection Type : |
Imaging |
Mass Detection : |
Radial Velocity |
Radius Detection : |
Primary Transit |
Habitability by Solar Eq. Astronomical Unit: |
Habitable |
Habitability by Kopparapu: |
Not habitable |
Star Name : |
|
Alternate Name : |
|
Star Distance(LY) : |
0.0 |
Stellar Radius(Rsun) : |
0.4 |
(Rsun Estimated) |
Stellar Mass(Msun) : |
0.0 |
(Msun Measured) |
1.1 |
(Msun Estimated) |
Star Age : |
0.0 |
(GY) |
Temperature : |
3300 |
(K) |
Spectral type : |
M9 |
UV portion[%]: |
0.2 |
Visible portion[%]: |
11.2 |
IR portion[%]: |
88.6 |
Metalicity : |
0.0 |
Absolute Magnitude: |
25.0 |
Apparent Magnitude: |
22.0 |
Right Ascension(RA) |
0.0000 |
Declination (DEC) |
0.0000 |
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
Discovered by |
|
Discovery Paper - Authors |
|
Discovery Paper - Title |
|
Discovery Paper - Journal |
|
Discovery Paper - URL |
|
SIMBAD LINK |
|
Open Exoplanet Database Link |
|
![](TOI-1742_b_CSun.png) |
![](TOI-1742_b_CJup.png) |
![](TOI-1742_b_CNep.png) |
![](TOI-1742_b_CEar.png) |
/
TOI-1742 b
TOI-1742 b
TOI-1742 b is an exoplanet orbiting the star . Its discovery was publicly announced on 2024.
The host star has apparent magnitude of 22.0, with absolute magnitude of 25.0.
In this planetary system, the extrasolar planet TOI-1742 b orbits around the star every 21.3 days with its orbital distance of 0.15 AU ( 23038072.1 km)
(Projected orbit of TOI-1742 b around its host star )
![](TOI-1742_b_Orb.png)
The Star 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.102 AU ( 15301294.9 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.141 AU ( 21150388.3 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.215 AU ( 32228511.1 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.317 AU ( 47425666.0 km)
Radiation at Planetary Boundary of TOI-1742 b : 1152.67 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star )
![](TOI-1742_b_OrbH.png)
Kopparapu Recent Venus for Star distance : 0.116 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star distance : 0.147 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star distance : 0.142 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star distance : 0.156 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star distance : 0.288 AU
Kopparapu Outer Boundary for Early Mars for Star distance : 0.304 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star )
![](TOI-1742_b_OrbK.png)
Original Kopparapu Recent Venus for Star distance : 0.115 AU
Original Kopparapu Runaway Greenhouse for Star distance : 0.152 AU
Original Kopparapu Moist Greenhouse for Star distance : 0.152 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star distance : 0.293 AU
Original Kopparapu Outer Boundary for Early Mars for Star distance : 0.304 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star )
![](TOI-1742_b_OrbKO.png)
(Position in Stellar Map of star and its Exoplanet TOI-1742 b)
![](TOI-1742_b_STZ0.png)
(Zoomed position in Stellar Map of star and its Exoplanet TOI-1742 b (zoom level 3))
![](TOI-1742_b_STZ3.png)
(Synthetic Spectrum of star *)
![](TOI-1742_b_Spc.png)
*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