|
Exoplanet Name : |
HR 858 d |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.1931 |
(Rjup) |
2.1640 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0170 |
(Mjup) |
5.4088 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.1027 |
(AU) |
0.1027 |
(AU Est.) |
|
Eccentricity : |
0.2800 |
|
Orbital Period(Yrs) |
0.0307 |
|
Orbital Period(Observed/Estimated) |
11.23 |
(Days Obs.) |
11.23 |
(Days Est.) |
|
Surface Gravity (G Earth) |
1.1550 |
|
Star Radiation at Atmospheric Boundary: |
295021.3 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
1040.2 |
(K) |
|
Blackbody T 0.3(K) |
976.8 |
(K) |
|
Blackbody T 0.7(K) |
790.4 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
1237.0 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
1161.7 |
(K) |
|
Size Class: |
sub-Neptune-size |
|
Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
|
|
Radius Detection : |
Primary Transit |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
HR 858 |
|
Alternate Name : |
TIC 178155732 |
|
Star Distance(LY) : |
104.3 |
|
Stellar Radius(Rsun) : |
1.3 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.1 |
(Msun Measured) |
1.1 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
6201 |
(K) |
|
Spectral type : |
F8 |
|
UV portion[%]: |
0.3 |
|
Visible portion[%]: |
1.5 |
|
IR portion[%]: |
98.2 |
|
Metalicity : |
-0.1 |
|
Absolute Magnitude: |
3.9 |
|
Apparent Magnitude: |
6.4 |
|
Right Ascension(RA) |
42.9844 |
|
Declination (DEC) |
-30.8144 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
07012-00833 |
|
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=HR+858+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
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HR 858 d
HR 858 d
HR 858 d is an exoplanet orbiting the star HR 858, located about 104.3 light-years (32.0 pc) away from Solar System. Its discovery was publicly announced on 2019.
The host star HR 858 has apparent magnitude of 6.4, with absolute magnitude of 3.9. It is 1.1 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 6201 with its spectral types of F8
In this planetary system, the extrasolar planet HR 858 d orbits around the star HR 858 every 11.2 days with its orbital distance of 0.10 AU ( 15363701.3 km)
(Projected orbit of HR 858 d around its host star HR 858)
The Star HR 858 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 1.091 AU ( 163249880.0 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 1.508 AU ( 225653996.5 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 2.298 AU ( 343846753.6 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 3.382 AU ( 505985560.8 km)
Radiation at Planetary Boundary of HR 858 d : 295021.35 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HR 858)
Kopparapu Recent Venus for Star HR 858 distance : 1.102 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HR 858 distance : 1.396 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HR 858 distance : 1.348 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HR 858 distance : 1.478 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HR 858 distance : 2.441 AU
Kopparapu Outer Boundary for Early Mars for Star HR 858 distance : 2.575 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HR 858)
Original Kopparapu Recent Venus for Star HR 858 distance : 1.114 AU
Original Kopparapu Runaway Greenhouse for Star HR 858 distance : 1.432 AU
Original Kopparapu Moist Greenhouse for Star HR 858 distance : 1.474 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HR 858 distance : 2.485 AU
Original Kopparapu Outer Boundary for Early Mars for Star HR 858 distance : 2.584 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HR 858)
(Position in Stellar Map of star HR 858 and its Exoplanet HR 858 d)
(Zoomed position in Stellar Map of star HR 858 and its Exoplanet HR 858 d (zoom level 3))
(Synthetic Spectrum of star HR 858*)
*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
