|
Exoplanet Name : |
HD 4917 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
1.2240 |
(Rjup) |
13.7198 |
(Rearth) |
|
Mass (Mjup / Me): |
1.6150 |
(Mjup) |
513.4699 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0000 |
(AU) |
1.1665 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
1.0965 |
|
Orbital Period(Observed/Estimated) |
400.50 |
(Days Obs.) |
0.00 |
(Days Est.) |
|
Surface Gravity (G Earth) |
2.7278 |
|
Star Radiation at Atmospheric Boundary: |
12029.2 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
467.4 |
(K) |
|
Blackbody T 0.3(K) |
439.0 |
(K) |
|
Blackbody T 0.7(K) |
355.2 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
555.9 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
522.0 |
(K) |
|
Size Class: |
Super-Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Radial Velocity |
|
Mass Detection : |
Radial Velocity |
|
Radius Detection : |
Theoretical |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
HD 4917 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
438.4 |
|
Stellar Radius(Rsun) : |
5.0 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.3 |
(Msun Measured) |
1.3 |
(Msun Estimated) |
|
Star Age : |
2.4 |
(GY) |
|
Temperature : |
4802 |
(K) |
|
Spectral type : |
KOIII/IV |
|
UV portion[%]: |
2.4 |
|
Visible portion[%]: |
35.5 |
|
IR portion[%]: |
62.1 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
2.4 |
|
Apparent Magnitude: |
8.0 |
|
Right Ascension(RA) |
12.7750 |
|
Declination (DEC) |
-11.0725 |
|
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 |
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HD 4917 b
HD 4917 b
HD 4917 b is an exoplanet orbiting the star HD 4917, located about 438.4 light-years (134.4 pc) away from Solar System. Its discovery was publicly announced on 2013.
The host star HD 4917 has apparent magnitude of 8.0, with absolute magnitude of 2.4. It is 1.3 times more massive and 5.0 times bigger compared with our Sun. The surface temperature is 4802 with its spectral types of KOIII/IV
In this planetary system, the extrasolar planet HD 4917 b orbits around the star HD 4917 every 400.5 days with its orbital distance of 1.17 AU ( 174498455.1 km)
(Projected orbit of HD 4917 b around its host star HD 4917)
The Star HD 4917 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 2.503 AU ( 374403715.4 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 3.459 AU ( 517523778.0 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 5.271 AU ( 788591709.9 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 7.757 AU ( 1160447247.2 km)
Radiation at Planetary Boundary of HD 4917 b : 12029.19 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 4917)
Kopparapu Recent Venus for Star HD 4917 distance : 2.732 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 4917 distance : 3.459 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 4917 distance : 3.341 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 4917 distance : 3.667 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 4917 distance : 6.320 AU
Kopparapu Outer Boundary for Early Mars for Star HD 4917 distance : 6.667 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 4917)
Original Kopparapu Recent Venus for Star HD 4917 distance : 2.699 AU
Original Kopparapu Runaway Greenhouse for Star HD 4917 distance : 3.567 AU
Original Kopparapu Moist Greenhouse for Star HD 4917 distance : 3.571 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 4917 distance : 6.425 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 4917 distance : 6.682 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 4917)
(Position in Stellar Map of star HD 4917 and its Exoplanet HD 4917 b)
(Zoomed position in Stellar Map of star HD 4917 and its Exoplanet HD 4917 b (zoom level 3))
(Synthetic Spectrum of star HD 4917*)
*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
