|
Exoplanet Name : |
HD 153557 Ab |
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Alternate Name : |
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Status : |
Confirmed |
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Radius (Rjup / Re): |
0.2315 |
(Rjup) |
2.5944 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0640 |
(Mjup) |
20.3480 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0680 |
(AU) |
0.0680 |
(AU Est.) |
|
Eccentricity : |
0.0650 |
|
Orbital Period(Yrs) |
0.0200 |
|
Orbital Period(Observed/Estimated) |
7.30 |
(Days Obs.) |
7.50 |
(Days Est.) |
|
Surface Gravity (G Earth) |
3.0231 |
|
Star Radiation at Atmospheric Boundary: |
90603.6 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
774.3 |
(K) |
|
Blackbody T 0.3(K) |
727.2 |
(K) |
|
Blackbody T 0.7(K) |
588.4 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
920.8 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
864.8 |
(K) |
|
Size Class: |
sub-Neptune-size |
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Mass Class: |
|
|
Detection Type : |
Radial Velocity |
|
Mass Detection : |
Radial Velocity |
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Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
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Habitability by Kopparapu: |
Not habitable |
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Star Name : |
HD 153557 A |
|
Alternate Name : |
"*V1090 Her, BD+47 2415 A, GJ 649.1 A, STFA 32 A, STF 4032 A" |
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Star Distance(LY) : |
58.5 |
|
Stellar Radius(Rsun) : |
0.8 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.7 |
(Msun Measured) |
0.8 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
4837 |
(K) |
|
Spectral type : |
K3V |
|
UV portion[%]: |
2.6 |
|
Visible portion[%]: |
35.7 |
|
IR portion[%]: |
61.8 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
6.6 |
|
Apparent Magnitude: |
7.8 |
|
Right Ascension(RA) |
254.4716 |
|
Declination (DEC) |
47.3667 |
|
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 |
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|
Discovery Paper - Journal |
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|
Discovery Paper - URL |
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|
SIMBAD LINK |
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|
Open Exoplanet Database Link |
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HD 153557 Ab
HD 153557 Ab
HD 153557 Ab is an exoplanet orbiting the star HD 153557 A, located about 58.5 light-years (17.9 pc) away from Solar System. Its discovery was publicly announced on 2022.
The host star HD 153557 A has apparent magnitude of 7.8, with absolute magnitude of 6.6. It is 0.7 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4837 with its spectral types of K3V
In this planetary system, the extrasolar planet HD 153557 Ab orbits around the star HD 153557 A every 7.3 days with its orbital distance of 0.07 AU ( 10172655.2 km)
(Projected orbit of HD 153557 Ab around its host star HD 153557 A)
The Star HD 153557 A 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.400 AU ( 59901456.0 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.553 AU ( 82799466.3 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.843 AU ( 126168063.1 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 1.241 AU ( 185661831.9 km)
Radiation at Planetary Boundary of HD 153557 Ab : 90603.61 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 153557 A)
Kopparapu Recent Venus for Star HD 153557 A distance : 0.436 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 153557 A distance : 0.553 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 153557 A distance : 0.534 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 153557 A distance : 0.586 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 153557 A distance : 1.008 AU
Kopparapu Outer Boundary for Early Mars for Star HD 153557 A distance : 1.063 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 153557 A)
Original Kopparapu Recent Venus for Star HD 153557 A distance : 0.431 AU
Original Kopparapu Runaway Greenhouse for Star HD 153557 A distance : 0.570 AU
Original Kopparapu Moist Greenhouse for Star HD 153557 A distance : 0.571 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 153557 A distance : 1.025 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 153557 A distance : 1.066 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 153557 A)
(Position in Stellar Map of star HD 153557 A and its Exoplanet HD 153557 Ab)
(Zoomed position in Stellar Map of star HD 153557 A and its Exoplanet HD 153557 Ab (zoom level 3))
(Synthetic Spectrum of star HD 153557 A*)
*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
