|
Exoplanet Name : |
HD 74698 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.2378 |
(Rjup) |
2.6656 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0720 |
(Mjup) |
22.8915 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.1210 |
(AU) |
0.1210 |
(AU Est.) |
|
Eccentricity : |
0.1000 |
|
Orbital Period(Yrs) |
0.0411 |
|
Orbital Period(Observed/Estimated) |
15.02 |
(Days Obs.) |
15.08 |
(Days Est.) |
|
Surface Gravity (G Earth) |
3.2216 |
|
Star Radiation at Atmospheric Boundary: |
166458.9 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
901.5 |
(K) |
|
Blackbody T 0.3(K) |
846.6 |
(K) |
|
Blackbody T 0.7(K) |
685.0 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
1072.1 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
1006.8 |
(K) |
|
Size Class: |
sub-Neptune-size |
|
Mass Class: |
|
|
Detection Type : |
Radial Velocity |
|
Mass Detection : |
Radial Velocity |
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
HD 74698 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
169.1 |
|
Stellar Radius(Rsun) : |
1.3 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.0 |
(Msun Measured) |
1.0 |
(Msun Estimated) |
|
Star Age : |
1.9 |
(GY) |
|
Temperature : |
5783 |
(K) |
|
Spectral type : |
G5V |
|
UV portion[%]: |
7.8 |
|
Visible portion[%]: |
44.8 |
|
IR portion[%]: |
47.4 |
|
Metalicity : |
0.1 |
|
Absolute Magnitude: |
18.4 |
|
Apparent Magnitude: |
22.0 |
|
Right Ascension(RA) |
130.0750 |
|
Declination (DEC) |
-71.8772 |
|
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 74698 b
HD 74698 b
HD 74698 b is an exoplanet orbiting the star HD 74698, located about 169.1 light-years (51.9 pc) away from Solar System. Its discovery was publicly announced on 2023.
The host star HD 74698 has apparent magnitude of 22.0, with absolute magnitude of 18.4. It is 1.0 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 5783 with its spectral types of G5V
In this planetary system, the extrasolar planet HD 74698 b orbits around the star HD 74698 every 15.0 days with its orbital distance of 0.12 AU ( 18101342.4 km)
(Projected orbit of HD 74698 b around its host star HD 74698)
The Star HD 74698 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.966 AU ( 144475646.5 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 1.335 AU ( 199703099.4 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 2.034 AU ( 304303329.4 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 2.993 AU ( 447795679.8 km)
Radiation at Planetary Boundary of HD 74698 b : 166458.95 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 74698)
Kopparapu Recent Venus for Star HD 74698 distance : 1.001 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 74698 distance : 1.267 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 74698 distance : 1.224 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 74698 distance : 1.342 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 74698 distance : 2.237 AU
Kopparapu Outer Boundary for Early Mars for Star HD 74698 distance : 2.360 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 74698)
Original Kopparapu Recent Venus for Star HD 74698 distance : 1.002 AU
Original Kopparapu Runaway Greenhouse for Star HD 74698 distance : 1.302 AU
Original Kopparapu Moist Greenhouse for Star HD 74698 distance : 1.326 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 74698 distance : 2.277 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 74698 distance : 2.368 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 74698)
(Position in Stellar Map of star HD 74698 and its Exoplanet HD 74698 b)
(Zoomed position in Stellar Map of star HD 74698 and its Exoplanet HD 74698 b (zoom level 3))
(Synthetic Spectrum of star HD 74698*)
*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
