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Exoplanet Name : |
HD 142 Ab |
|
Alternate Name : |
HD 142 b |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
1.2500 |
(Mjup) |
397.4225 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
1.0200 |
(AU) |
1.0200 |
(AU Est.) |
|
Eccentricity : |
0.1700 |
|
Orbital Period(Yrs) |
0.9574 |
|
Orbital Period(Observed/Estimated) |
349.70 |
(Days Obs.) |
358.75 |
(Days Est.) |
|
Surface Gravity (G Earth) |
3.8380 |
|
Star Radiation at Atmospheric Boundary: |
1271.6 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
266.5 |
(K) |
|
Blackbody T 0.3(K) |
250.3 |
(K) |
|
Blackbody T 0.7(K) |
202.5 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
316.9 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
297.6 |
(K) |
|
Size Class: |
Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Radial Velocity |
|
Mass Detection : |
|
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
HD 142 A |
|
Alternate Name : |
HD 142 |
|
Star Distance(LY) : |
67.2 |
|
Stellar Radius(Rsun) : |
0.9 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.1 |
(Msun Measured) |
1.2 |
(Msun Estimated) |
|
Star Age : |
5.9 |
(GY) |
|
Temperature : |
6180 |
(K) |
|
Spectral type : |
G1 IV |
|
UV portion[%]: |
0.3 |
|
Visible portion[%]: |
1.5 |
|
IR portion[%]: |
98.2 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
4.1 |
|
Apparent Magnitude: |
5.7 |
|
Right Ascension(RA) |
1.5792 |
|
Declination (DEC) |
-49.0750 |
|
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 142 Ab
HD 142 Ab
HD 142 Ab is an exoplanet orbiting the star HD 142 A, located about 67.2 light-years (20.6 pc) away from Solar System. Its discovery was publicly announced on 2001.
The host star HD 142 A has apparent magnitude of 5.7, with absolute magnitude of 4.1. It is 1.1 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 6180 with its spectral types of G1 IV
In this planetary system, the extrasolar planet HD 142 Ab orbits around the star HD 142 A every 349.7 days with its orbital distance of 1.02 AU ( 152589828.1 km)
(Projected orbit of HD 142 Ab around its host star HD 142 A)
The Star HD 142 A 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.712 AU ( 106447021.5 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.984 AU ( 147137601.6 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.499 AU ( 224205143.4 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 2.205 AU ( 329927690.3 km)
Radiation at Planetary Boundary of HD 142 Ab : 1271.61 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 142 A)
Kopparapu Recent Venus for Star HD 142 A distance : 0.720 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 142 A distance : 0.911 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 142 A distance : 0.880 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 142 A distance : 0.965 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 142 A distance : 1.594 AU
Kopparapu Outer Boundary for Early Mars for Star HD 142 A distance : 1.682 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 142 A)
Original Kopparapu Recent Venus for Star HD 142 A distance : 0.727 AU
Original Kopparapu Runaway Greenhouse for Star HD 142 A distance : 0.935 AU
Original Kopparapu Moist Greenhouse for Star HD 142 A distance : 0.962 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 142 A distance : 1.623 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 142 A distance : 1.688 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 142 A)
(Position in Stellar Map of star HD 142 A and its Exoplanet HD 142 Ab)
(Zoomed position in Stellar Map of star HD 142 A and its Exoplanet HD 142 Ab (zoom level 3))
(Synthetic Spectrum of star HD 142 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
