|
Exoplanet Name : |
KELT-9 b |
|
Alternate Name : |
HD 195689 b |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
1.8400 |
(Rjup) |
20.6246 |
(Rearth) |
|
Mass (Mjup / Me): |
2.8800 |
(Mjup) |
915.6614 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0337 |
(AU) |
0.0337 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0041 |
|
Orbital Period(Observed/Estimated) |
1.48 |
(Days Obs.) |
0.00 |
(Days Est.) |
|
Surface Gravity (G Earth) |
2.1526 |
|
Star Radiation at Atmospheric Boundary: |
28918917.8 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
3272.9 |
(K) |
|
Blackbody T 0.3(K) |
3073.6 |
(K) |
|
Blackbody T 0.7(K) |
2486.9 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
3892.2 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
3655.2 |
(K) |
|
Size Class: |
Super-Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
Spectrum |
|
Radius Detection : |
Primary Transit |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
HD 195689 |
|
Alternate Name : |
KELT-9 |
|
Star Distance(LY) : |
670.8 |
|
Stellar Radius(Rsun) : |
1.6 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
0.0 |
(Msun Measured) |
2.3 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
10170 |
(K) |
|
Spectral type : |
A0 |
|
UV portion[%]: |
7.8 |
|
Visible portion[%]: |
44.8 |
|
IR portion[%]: |
47.4 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
1.0 |
|
Apparent Magnitude: |
7.6 |
|
Right Ascension(RA) |
307.8598 |
|
Declination (DEC) |
39.9388 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
03157-00638 |
|
Discovered by |
|
|
Discovery Paper - Authors |
|
|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
|
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+195689+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
|
 |
 |
 |
 |
/
KELT-9 b
KELT-9 b
KELT-9 b is an exoplanet orbiting the star HD 195689, located about 670.8 light-years (205.7 pc) away from Solar System. Its discovery was publicly announced on 2017.
The host star HD 195689 has apparent magnitude of 7.6, with absolute magnitude of 1.0.
In this planetary system, the extrasolar planet KELT-9 b orbits around the star HD 195689 every 1.5 days with its orbital distance of 0.03 AU ( 5038456.3 km)
(Projected orbit of KELT-9 b around its host star HD 195689)
The Star HD 195689 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 3.543 AU ( 530052403.7 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 4.898 AU ( 732670941.2 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 7.463 AU ( 1116428374.7 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 10.982 AU ( 1642873260.9 km)
Radiation at Planetary Boundary of KELT-9 b : 28918917.79 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 195689)
Kopparapu Recent Venus for Star HD 195689 distance : 5.079 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 195689 distance : 6.441 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 195689 distance : 6.242 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 195689 distance : 6.741 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 195689 distance : 11.495 AU
Kopparapu Outer Boundary for Early Mars for Star HD 195689 distance : 12.088 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 195689)
Original Kopparapu Recent Venus for Star HD 195689 distance : 4.157 AU
Original Kopparapu Runaway Greenhouse for Star HD 195689 distance : 6.447 AU
Original Kopparapu Moist Greenhouse for Star HD 195689 distance : 5.501 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 195689 distance : 11.437 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 195689 distance : 11.894 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 195689)
(Position in Stellar Map of star HD 195689 and its Exoplanet KELT-9 b)
(Zoomed position in Stellar Map of star HD 195689 and its Exoplanet KELT-9 b (zoom level 3))
(Synthetic Spectrum of star HD 195689*)
*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
