|
Exoplanet Name : |
PSR 1257 12 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
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.) |
26.13 |
(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) |
1.3 |
(K) |
|
Blackbody T 0.3(K) |
1.3 |
(K) |
|
Blackbody T 0.7(K) |
1.0 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
1.6 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
1.5 |
(K) |
|
Size Class: |
Mercury-size |
|
Mass Class: |
|
|
Detection Type : |
Pulsar |
|
Mass Detection : |
|
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Habitable |
|
Star Name : |
PSR 1257 12 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
2315.7 |
|
Stellar Radius(Rsun) : |
0.0 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
1.3 |
(Msun Measured) |
1.4 |
(Msun Estimated) |
|
Star Age : |
1.0 |
(GY) |
|
Temperature : |
3300 |
(K) |
|
Spectral type : |
M9 |
|
UV portion[%]: |
0.2 |
|
Visible portion[%]: |
11.2 |
|
IR portion[%]: |
88.6 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
12.7 |
|
Apparent Magnitude: |
22.0 |
|
Right Ascension(RA) |
195.0129 |
|
Declination (DEC) |
12.6822 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
0 |
|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
0 |
|
Discovery Paper - URL |
0 |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-id?Ident=PSR%20B1257%2B12 |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/PSR%201257%2012%20b/ |
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PSR 1257 12 b
PSR 1257 12 b
PSR 1257 12 b is an exoplanet orbiting the star PSR 1257 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 1257 12 has apparent magnitude of 22.0, with absolute magnitude of 12.7. It is 1.3 times more massive compared with our Sun. The surface temperature is 3300 with its spectral types of M9
In this planetary system, the extrasolar planet PSR 1257 12 b orbits around the star PSR 1257 12 every 25.3 days with its orbital distance of 0.19 AU ( 28423595.4 km)
(Projected orbit of PSR 1257 12 b around its host star PSR 1257 12)
The Star PSR 1257 12 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.000 AU ( 507.3 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.000 AU ( 701.2 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.000 AU ( 1068.5 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.000 AU ( 1572.3 km)
Radiation at Planetary Boundary of PSR 1257 12 b : 0.00 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star PSR 1257 12)
Kopparapu Recent Venus for Star PSR 1257 12 distance : 0.116 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star PSR 1257 12 distance : 0.147 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star PSR 1257 12 distance : 0.142 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star PSR 1257 12 distance : 0.156 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star PSR 1257 12 distance : 0.288 AU
Kopparapu Outer Boundary for Early Mars for Star PSR 1257 12 distance : 0.304 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star PSR 1257 12)
Original Kopparapu Recent Venus for Star PSR 1257 12 distance : 0.115 AU
Original Kopparapu Runaway Greenhouse for Star PSR 1257 12 distance : 0.152 AU
Original Kopparapu Moist Greenhouse for Star PSR 1257 12 distance : 0.152 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star PSR 1257 12 distance : 0.293 AU
Original Kopparapu Outer Boundary for Early Mars for Star PSR 1257 12 distance : 0.304 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star PSR 1257 12)
(Position in Stellar Map of star PSR 1257 12 and its Exoplanet PSR 1257 12 b)
(Zoomed position in Stellar Map of star PSR 1257 12 and its Exoplanet PSR 1257 12 b (zoom level 3))
(Synthetic Spectrum of star PSR 1257 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
