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Exoplanet Name : |
PSR B1257+12 b |
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Alternate Name : |
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Status : |
Confirmed |
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Radius (Rjup / Re): |
0.0302 |
(Rjup) |
0.3381 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0001 |
(Mjup) |
0.0223 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.1900 |
(AU) |
0.1900 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0692 |
|
Orbital Period(Observed/Estimated) |
25.26 |
(Days Obs.) |
0.00 |
(Days Est.) |
|
Surface Gravity (G Earth) |
0.1947 |
|
Star Radiation at Atmospheric Boundary: |
0.0 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
2.2 |
(K) |
|
Blackbody T 0.3(K) |
2.1 |
(K) |
|
Blackbody T 0.7(K) |
1.7 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
2.7 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
2.5 |
(K) |
|
Size Class: |
Mercury-size |
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Mass Class: |
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Detection Type : |
Timing |
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Mass Detection : |
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Radius Detection : |
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Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
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Habitability by Kopparapu: |
Not habitable |
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Star Name : |
PSR B1257+12 |
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Alternate Name : |
PSR J1300+1240 |
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Star Distance(LY) : |
2315.7 |
|
Stellar Radius(Rsun) : |
0.0 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
0.0 |
(Msun Measured) |
1.4 |
(Msun Estimated) |
|
Star Age : |
1.0 |
(GY) |
|
Temperature : |
5500 |
(K) |
|
Spectral type : |
PSR |
|
UV portion[%]: |
6.9 |
|
Visible portion[%]: |
43.2 |
|
IR portion[%]: |
49.9 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
12.7 |
|
Apparent Magnitude: |
22.0 |
|
Right Ascension(RA) |
195.0167 |
|
Declination (DEC) |
12.6822 |
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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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PSR B1257+12 b
PSR B1257+12 b
PSR B1257+12 b is an exoplanet orbiting the star PSR B1257+12, located about 2315.7 light-years (710.0 pc) away from Solar System. Its discovery was publicly announced on 1992.
The host star PSR B1257+12 has apparent magnitude of 22.0, with absolute magnitude of 12.7.
In this planetary system, the extrasolar planet PSR B1257+12 b orbits around the star PSR B1257+12 every 25.3 days with its orbital distance of 0.19 AU ( 28423595.4 km)
(Projected orbit of PSR B1257+12 b around its host star PSR B1257+12)
The Star PSR B1257+12 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.000 AU ( 1409.2 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.000 AU ( 1947.8 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.000 AU ( 2968.1 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.000 AU ( 4367.6 km)
Radiation at Planetary Boundary of PSR B1257+12 b : 0.00 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star PSR B1257+12)
Kopparapu Recent Venus for Star PSR B1257+12 distance : 0.762 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star PSR B1257+12 distance : 0.965 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star PSR B1257+12 distance : 0.932 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star PSR B1257+12 distance : 1.022 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star PSR B1257+12 distance : 1.718 AU
Kopparapu Outer Boundary for Early Mars for Star PSR B1257+12 distance : 1.812 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star PSR B1257+12)
Original Kopparapu Recent Venus for Star PSR B1257+12 distance : 0.759 AU
Original Kopparapu Runaway Greenhouse for Star PSR B1257+12 distance : 0.992 AU
Original Kopparapu Moist Greenhouse for Star PSR B1257+12 distance : 1.004 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star PSR B1257+12 distance : 1.747 AU
Original Kopparapu Outer Boundary for Early Mars for Star PSR B1257+12 distance : 1.817 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star PSR B1257+12)
(Position in Stellar Map of star PSR B1257+12 and its Exoplanet PSR B1257+12 b)
(Zoomed position in Stellar Map of star PSR B1257+12 and its Exoplanet PSR B1257+12 b (zoom level 3))
(Synthetic Spectrum of star PSR B1257+12*)
*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
