Exoplanet Name : |
sig Per b |
Alternate Name : |
|
Status : |
Confirmed |
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
Mass (Mjup / Me): |
6.5000 |
(Mjup) |
2066.5970 |
(Mearth) |
Semi Major Axis / Orbital Distance Calculated |
1.8000 |
(AU) |
1.8000 |
(AU Est.) |
Eccentricity : |
0.3000 |
Orbital Period(Yrs) |
1.5874 |
Orbital Period(Observed/Estimated) |
579.80 |
(Days Obs.) |
588.04 |
(Days Est.) |
Surface Gravity (G Earth) |
19.9578 |
Star Radiation at Atmospheric Boundary: |
107921.7 |
(W/m2) |
Measured Temperature (K) |
0.0 |
(K) |
Blackbody T 0.1(K) |
808.9 |
(K) |
Blackbody T 0.3(K) |
759.7 |
(K) |
Blackbody T 0.7(K) |
614.7 |
(K) |
Tidally Locked Blackbody T 0.1(K) |
962.0 |
(K) |
Tidally Locked Blackbody T 0.3(K) |
903.4 |
(K) |
Size Class: |
Jupiter-size |
Mass Class: |
|
Detection Type : |
Radial Velocity |
Mass Detection : |
|
Radius Detection : |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
Habitability by Kopparapu: |
Not habitable |
Star Name : |
sig Per |
Alternate Name : |
|
Star Distance(LY) : |
359.6 |
Stellar Radius(Rsun) : |
28.0 |
(Rsun Measured) |
Stellar Mass(Msun) : |
2.2 |
(Msun Measured) |
2.3 |
(Msun Estimated) |
Star Age : |
0.0 |
(GY) |
Temperature : |
4367 |
(K) |
Spectral type : |
K3III |
UV portion[%]: |
1.1 |
Visible portion[%]: |
28.7 |
IR portion[%]: |
70.1 |
Metalicity : |
-0.2 |
Absolute Magnitude: |
-0.9 |
Apparent Magnitude: |
4.4 |
Right Ascension(RA) |
52.6437 |
Declination (DEC) |
47.9953 |
Hubble Space Telescope Guide Star Catalog (GSC) ID |
03316-02308 |
Discovered by |
|
Discovery Paper - Authors |
0 |
Discovery Paper - Title |
0 |
Discovery Paper - Journal |
0 |
Discovery Paper - URL |
0 |
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=sig+Per+&submit=SIMBAD+search |
Open Exoplanet Database Link |
0 |
![](sig_Per_b_CSun.png) |
![](sig_Per_b_CJup.png) |
![](sig_Per_b_CNep.png) |
![](sig_Per_b_CEar.png) |
/
sig Per b
sig Per b
sig Per b is an exoplanet orbiting the star sig Per, located about 359.6 light-years (110.3 pc) away from Solar System. Its discovery was publicly announced on 2014.
The host star sig Per has apparent magnitude of 4.4, with absolute magnitude of -0.9. It is 2.2 times more massive and 28.0 times bigger compared with our Sun. The surface temperature is 4367 with its spectral types of K3III
In this planetary system, the extrasolar planet sig Per b orbits around the star sig Per every 579.8 days with its orbital distance of 1.80 AU ( 269276167.3 km)
(Projected orbit of sig Per b around its host star sig Per)
![](sig_Per_b_Orb.png)
The Star sig Per 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 11.568 AU ( 1730543528.7 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 15.990 AU ( 2392063401.7 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 24.365 AU ( 3644975261.7 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 35.854 AU ( 5363740773.7 km)
Radiation at Planetary Boundary of sig Per b : 107921.66 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star sig Per)
![](sig_Per_b_OrbH.png)
Kopparapu Recent Venus for Star sig Per distance : 12.833 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star sig Per distance : 16.245 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star sig Per distance : 15.691 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star sig Per distance : 17.236 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star sig Per distance : 30.280 AU
Kopparapu Outer Boundary for Early Mars for Star sig Per distance : 31.942 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star sig Per)
![](sig_Per_b_OrbK.png)
Original Kopparapu Recent Venus for Star sig Per distance : 12.662 AU
Original Kopparapu Runaway Greenhouse for Star sig Per distance : 16.779 AU
Original Kopparapu Moist Greenhouse for Star sig Per distance : 16.754 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star sig Per distance : 30.771 AU
Original Kopparapu Outer Boundary for Early Mars for Star sig Per distance : 32.001 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star sig Per)
![](sig_Per_b_OrbKO.png)
(Position in Stellar Map of star sig Per and its Exoplanet sig Per b)
![](sig_Per_b_STZ0.png)
(Zoomed position in Stellar Map of star sig Per and its Exoplanet sig Per b (zoom level 3))
![](sig_Per_b_STZ3.png)
(Synthetic Spectrum of star sig Per*)
![](sig_Per_b_Spc.png)
*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