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Exoplanet Name : |
KMT-2021-BLG-1898 b |
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Alternate Name : |
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Status : |
Confirmed |
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Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
0.7600 |
(Mjup) |
241.6329 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
2.5000 |
(AU) |
2.5000 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0000 |
|
Orbital Period(Observed/Estimated) |
0.00 |
(Days Obs.) |
2083.91 |
(Days Est.) |
|
Surface Gravity (G Earth) |
2.3335 |
|
Star Radiation at Atmospheric Boundary: |
4.8 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
66.0 |
(K) |
|
Blackbody T 0.3(K) |
62.0 |
(K) |
|
Blackbody T 0.7(K) |
50.2 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
78.5 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
73.7 |
(K) |
|
Size Class: |
Jupiter-size |
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Mass Class: |
|
|
Detection Type : |
Microlensing |
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Mass Detection : |
Microlensing |
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Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
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Habitability by Kopparapu: |
Not habitable |
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Star Name : |
KMT-2021-BLG-1898 |
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Alternate Name : |
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Star Distance(LY) : |
22504.8 |
|
Stellar Radius(Rsun) : |
0.5 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
0.5 |
(Msun Measured) |
0.0 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
3300 |
(K) |
|
Spectral type : |
M9 |
|
UV portion[%]: |
0.2 |
|
Visible portion[%]: |
11.2 |
|
IR portion[%]: |
88.6 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
7.8 |
|
Apparent Magnitude: |
22.0 |
|
Right Ascension(RA) |
265.6917 |
|
Declination (DEC) |
-27.3758 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
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Discovered by |
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Discovery Paper - Authors |
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|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
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|
SIMBAD LINK |
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Open Exoplanet Database Link |
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KMT-2021-BLG-1898 b
KMT-2021-BLG-1898 b
KMT-2021-BLG-1898 b is an exoplanet orbiting the star KMT-2021-BLG-1898, located about 22504.8 light-years (6900.0 pc) away from Solar System. Its discovery was publicly announced on 2022.
The host star KMT-2021-BLG-1898 has apparent magnitude of 22.0, with absolute magnitude of 7.8. It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3300 with its spectral types of M9
(Projected orbit of KMT-2021-BLG-1898 b around its host star KMT-2021-BLG-1898)
The Star KMT-2021-BLG-1898 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.107 AU ( 16002587.5 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.148 AU ( 22119757.9 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.225 AU ( 33705615.9 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.332 AU ( 49599290.4 km)
Radiation at Planetary Boundary of KMT-2021-BLG-1898 b : 4.78 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star KMT-2021-BLG-1898)
Kopparapu Recent Venus for Star KMT-2021-BLG-1898 distance : 0.121 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star KMT-2021-BLG-1898 distance : 0.153 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star KMT-2021-BLG-1898 distance : 0.148 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star KMT-2021-BLG-1898 distance : 0.163 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star KMT-2021-BLG-1898 distance : 0.301 AU
Kopparapu Outer Boundary for Early Mars for Star KMT-2021-BLG-1898 distance : 0.318 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star KMT-2021-BLG-1898)
Original Kopparapu Recent Venus for Star KMT-2021-BLG-1898 distance : 0.120 AU
Original Kopparapu Runaway Greenhouse for Star KMT-2021-BLG-1898 distance : 0.159 AU
Original Kopparapu Moist Greenhouse for Star KMT-2021-BLG-1898 distance : 0.159 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star KMT-2021-BLG-1898 distance : 0.306 AU
Original Kopparapu Outer Boundary for Early Mars for Star KMT-2021-BLG-1898 distance : 0.318 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star KMT-2021-BLG-1898)
(Position in Stellar Map of star KMT-2021-BLG-1898 and its Exoplanet KMT-2021-BLG-1898 b)
(Zoomed position in Stellar Map of star KMT-2021-BLG-1898 and its Exoplanet KMT-2021-BLG-1898 b (zoom level 3))
(Synthetic Spectrum of star KMT-2021-BLG-1898*)
*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
