|
Exoplanet Name : |
HD 40781 b |
|
Alternate Name : |
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|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
60.0000 |
(Mjup) |
19076.2800 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
3300.0000 |
(AU) |
3300.0000 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
176641.2966 |
|
Orbital Period(Observed/Estimated) |
64520000.00 |
(Days Obs.) |
66320514.31 |
(Days Est.) |
|
Surface Gravity (G Earth) |
184.2260 |
|
Star Radiation at Atmospheric Boundary: |
0.0 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
5.2 |
(K) |
|
Blackbody T 0.3(K) |
4.9 |
(K) |
|
Blackbody T 0.7(K) |
4.0 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
6.2 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
5.8 |
(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 : |
HD 40781 |
|
Alternate Name : |
HIP 28333 |
|
Star Distance(LY) : |
209.0 |
|
Stellar Radius(Rsun) : |
1.2 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.1 |
(Msun Measured) |
1.2 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
5953 |
(K) |
|
Spectral type : |
G0V |
|
UV portion[%]: |
0.3 |
|
Visible portion[%]: |
1.5 |
|
IR portion[%]: |
98.2 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
4.4 |
|
Apparent Magnitude: |
8.4 |
|
Right Ascension(RA) |
89.8057 |
|
Declination (DEC) |
-38.7105 |
|
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 |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
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|
SIMBAD LINK |
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|
Open Exoplanet Database Link |
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HD 40781 b
HD 40781 b
HD 40781 b is an exoplanet orbiting the star HD 40781, located about 209.0 light-years (64.1 pc) away from Solar System. Its discovery was publicly announced on 2024.
The host star HD 40781 has apparent magnitude of 8.4, with absolute magnitude of 4.4. It is 1.1 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5953 with its spectral types of G0V
In this planetary system, the extrasolar planet HD 40781 b orbits around the star HD 40781 every 64520000.0 days with its orbital distance of 3300.00 AU ( 493672973310.0 km)
(Projected orbit of HD 40781 b around its host star HD 40781)
The Star HD 40781 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.885 AU ( 132421707.9 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 1.224 AU ( 183041406.2 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.864 AU ( 278914596.1 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 2.744 AU ( 410435046.7 km)
Radiation at Planetary Boundary of HD 40781 b : 0.00 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 40781)
Kopparapu Recent Venus for Star HD 40781 distance : 0.908 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 40781 distance : 1.150 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 40781 distance : 1.110 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 40781 distance : 1.217 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 40781 distance : 2.021 AU
Kopparapu Outer Boundary for Early Mars for Star HD 40781 distance : 2.132 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 40781)
Original Kopparapu Recent Venus for Star HD 40781 distance : 0.912 AU
Original Kopparapu Runaway Greenhouse for Star HD 40781 distance : 1.181 AU
Original Kopparapu Moist Greenhouse for Star HD 40781 distance : 1.207 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 40781 distance : 2.057 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 40781 distance : 2.139 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 40781)
(Position in Stellar Map of star HD 40781 and its Exoplanet HD 40781 b)
(Zoomed position in Stellar Map of star HD 40781 and its Exoplanet HD 40781 b (zoom level 3))
(Synthetic Spectrum of star HD 40781*)
*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
