|
Exoplanet Name : |
tau1 Gru b |
|
Alternate Name : |
HD 216435 b |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
1.2600 |
(Mjup) |
400.6019 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
2.5600 |
(AU) |
2.5600 |
(AU Est.) |
|
Eccentricity : |
0.0700 |
|
Orbital Period(Yrs) |
3.5892 |
|
Orbital Period(Observed/Estimated) |
1311.00 |
(Days Obs.) |
1312.13 |
(Days Est.) |
|
Surface Gravity (G Earth) |
3.8687 |
|
Star Radiation at Atmospheric Boundary: |
827.9 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
239.4 |
(K) |
|
Blackbody T 0.3(K) |
224.8 |
(K) |
|
Blackbody T 0.7(K) |
181.9 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
284.7 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
267.4 |
(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 : |
tau1 Gru |
|
Alternate Name : |
HD 216435 |
|
Star Distance(LY) : |
108.6 |
|
Stellar Radius(Rsun) : |
2.0 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.3 |
(Msun Measured) |
1.3 |
(Msun Estimated) |
|
Star Age : |
5.3 |
(GY) |
|
Temperature : |
5767 |
(K) |
|
Spectral type : |
G0 V |
|
UV portion[%]: |
7.8 |
|
Visible portion[%]: |
44.7 |
|
IR portion[%]: |
47.5 |
|
Metalicity : |
0.2 |
|
Absolute Magnitude: |
3.4 |
|
Apparent Magnitude: |
6.0 |
|
Right Ascension(RA) |
343.4042 |
|
Declination (DEC) |
-48.5981 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
|
|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
|
|
SIMBAD LINK |
|
|
Open Exoplanet Database Link |
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 |
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tau1 Gru b
tau1 Gru b
tau1 Gru b is an exoplanet orbiting the star tau1 Gru, located about 108.6 light-years (33.3 pc) away from Solar System. Its discovery was publicly announced on 2002.
The host star tau1 Gru has apparent magnitude of 6.0, with absolute magnitude of 3.4. It is 1.3 times more massive and 2.0 times bigger compared with our Sun. The surface temperature is 5767 with its spectral types of G0 V
In this planetary system, the extrasolar planet tau1 Gru b orbits around the star tau1 Gru every 1311.0 days with its orbital distance of 2.56 AU ( 382970549.0 km)
(Projected orbit of tau1 Gru b around its host star tau1 Gru)
The Star tau1 Gru 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 1.441 AU ( 215569845.7 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 1.992 AU ( 297973862.0 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 3.035 AU ( 454046224.1 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 4.466 AU ( 668148909.3 km)
Radiation at Planetary Boundary of tau1 Gru b : 827.91 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star tau1 Gru)
Kopparapu Recent Venus for Star tau1 Gru distance : 1.495 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star tau1 Gru distance : 1.893 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star tau1 Gru distance : 1.828 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star tau1 Gru distance : 2.004 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star tau1 Gru distance : 3.343 AU
Kopparapu Outer Boundary for Early Mars for Star tau1 Gru distance : 3.526 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star tau1 Gru)
Original Kopparapu Recent Venus for Star tau1 Gru distance : 1.496 AU
Original Kopparapu Runaway Greenhouse for Star tau1 Gru distance : 1.945 AU
Original Kopparapu Moist Greenhouse for Star tau1 Gru distance : 1.980 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star tau1 Gru distance : 3.402 AU
Original Kopparapu Outer Boundary for Early Mars for Star tau1 Gru distance : 3.538 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star tau1 Gru)
(Position in Stellar Map of star tau1 Gru and its Exoplanet tau1 Gru b)
(Zoomed position in Stellar Map of star tau1 Gru and its Exoplanet tau1 Gru b (zoom level 3))
(Synthetic Spectrum of star tau1 Gru*)
*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
