|
Exoplanet Name : |
Kepler-1881 Ab |
|
Alternate Name : |
"KOI-2841 b, KOI-2841.01" |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.2660 |
(Rjup) |
2.9810 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0229 |
(Mjup) |
7.2858 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.5368 |
(AU) |
0.5368 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.4364 |
|
Orbital Period(Observed/Estimated) |
159.39 |
(Days Obs.) |
154.01 |
(Days Est.) |
|
Surface Gravity (G Earth) |
0.8199 |
|
Star Radiation at Atmospheric Boundary: |
2329.1 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
310.1 |
(K) |
|
Blackbody T 0.3(K) |
291.2 |
(K) |
|
Blackbody T 0.7(K) |
235.6 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
368.7 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
346.3 |
(K) |
|
Size Class: |
sub-Neptune-size |
|
Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
|
|
Radius Detection : |
Primary Transit |
|
Habitability by Solar Eq. Astronomical Unit: |
Habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
Kepler-1881 A |
|
Alternate Name : |
"KIC 8758204, KOI-2823" |
|
Star Distance(LY) : |
3448.2 |
|
Stellar Radius(Rsun) : |
0.9 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.9 |
(Msun Measured) |
0.8 |
(Msun Estimated) |
|
Star Age : |
0.9 |
(GY) |
|
Temperature : |
5156 |
(K) |
|
Spectral type : |
G9/K0V |
|
UV portion[%]: |
4.5 |
|
Visible portion[%]: |
39.5 |
|
IR portion[%]: |
56.0 |
|
Metalicity : |
-0.1 |
|
Absolute Magnitude: |
5.8 |
|
Apparent Magnitude: |
15.9 |
|
Right Ascension(RA) |
293.6394 |
|
Declination (DEC) |
44.9825 |
|
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 |
|
 |
 |
 |
 |
/
Kepler-1881 Ab
Kepler-1881 Ab
Kepler-1881 Ab is an exoplanet orbiting the star Kepler-1881 A, located about 3448.2 light-years (1057.2 pc) away from Solar System. Its discovery was publicly announced on 2017.
The host star Kepler-1881 A has apparent magnitude of 15.9, with absolute magnitude of 5.8. It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5156 with its spectral types of G9/K0V
In this planetary system, the extrasolar planet Kepler-1881 Ab orbits around the star Kepler-1881 A every 159.4 days with its orbital distance of 0.54 AU ( 80304137.0 km)
(Projected orbit of Kepler-1881 Ab around its host star Kepler-1881 A)
The Star Kepler-1881 A 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.507 AU ( 75817001.1 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.701 AU ( 104798908.8 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.067 AU ( 159690345.1 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 1.571 AU ( 234991338.4 km)
Radiation at Planetary Boundary of Kepler-1881 Ab : 2329.15 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1881 A)
Kopparapu Recent Venus for Star Kepler-1881 A distance : 0.544 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1881 A distance : 0.689 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1881 A distance : 0.665 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1881 A distance : 0.730 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1881 A distance : 1.241 AU
Kopparapu Outer Boundary for Early Mars for Star Kepler-1881 A distance : 1.309 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1881 A)
Original Kopparapu Recent Venus for Star Kepler-1881 A distance : 0.539 AU
Original Kopparapu Runaway Greenhouse for Star Kepler-1881 A distance : 0.709 AU
Original Kopparapu Moist Greenhouse for Star Kepler-1881 A distance : 0.713 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1881 A distance : 1.262 AU
Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1881 A distance : 1.312 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1881 A)
(Position in Stellar Map of star Kepler-1881 A and its Exoplanet Kepler-1881 Ab)
(Zoomed position in Stellar Map of star Kepler-1881 A and its Exoplanet Kepler-1881 Ab (zoom level 3))
(Synthetic Spectrum of star Kepler-1881 A*)
*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
