Exoplanet Name : |
UCAC4 204-003910 b |
Alternate Name : |
CWISE J040351.12-491605.4 |
Status : |
Confirmed |
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
Mass (Mjup / Me): |
30.0000 |
(Mjup) |
9538.1400 |
(Mearth) |
Semi Major Axis / Orbital Distance Calculated |
1400.0000 |
(AU) |
1400.0000 |
(AU Est.) |
Eccentricity : |
0.0000 |
Orbital Period(Yrs) |
68718.1734 |
Orbital Period(Observed/Estimated) |
25100000.00 |
(Days Obs.) |
27445057.40 |
(Days Est.) |
Surface Gravity (G Earth) |
92.1130 |
Star Radiation at Atmospheric Boundary: |
0.0 |
(W/m2) |
Measured Temperature (K) |
0.0 |
(K) |
Blackbody T 0.1(K) |
3.2 |
(K) |
Blackbody T 0.3(K) |
3.0 |
(K) |
Blackbody T 0.7(K) |
2.5 |
(K) |
Tidally Locked Blackbody T 0.1(K) |
3.8 |
(K) |
Tidally Locked Blackbody T 0.3(K) |
3.6 |
(K) |
Size Class: |
Jupiter-size |
Mass Class: |
|
Detection Type : |
Imaging |
Mass Detection : |
|
Radius Detection : |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
Habitability by Kopparapu: |
Not habitable |
Star Name : |
UCAC4 204-003910 |
Alternate Name : |
SCR J0403-4916 |
Star Distance(LY) : |
136.7 |
Stellar Radius(Rsun) : |
0.5 |
(Rsun Measured) |
Stellar Mass(Msun) : |
0.5 |
(Msun Measured) |
0.6 |
(Msun Estimated) |
Star Age : |
14.0 |
(GY) |
Temperature : |
3681 |
(K) |
Spectral type : |
M2V |
UV portion[%]: |
0.3 |
Visible portion[%]: |
13.1 |
IR portion[%]: |
86.6 |
Metalicity : |
0.4 |
Absolute Magnitude: |
9.7 |
Apparent Magnitude: |
12.8 |
Right Ascension(RA) |
60.9734 |
Declination (DEC) |
-49.2745 |
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 |
|
![](UCAC4_204-003910_b_CSun.png) |
![](UCAC4_204-003910_b_CJup.png) |
![](UCAC4_204-003910_b_CNep.png) |
![](UCAC4_204-003910_b_CEar.png) |
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UCAC4 204-003910 b
UCAC4 204-003910 b
UCAC4 204-003910 b is an exoplanet orbiting the star UCAC4 204-003910, located about 136.7 light-years (41.9 pc) away from Solar System. Its discovery was publicly announced on 2024.
The host star UCAC4 204-003910 has apparent magnitude of 12.8, with absolute magnitude of 9.7. It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3681 with its spectral types of M2V
In this planetary system, the extrasolar planet UCAC4 204-003910 b orbits around the star UCAC4 204-003910 every 25100000.0 days with its orbital distance of 1400.00 AU ( 209437018980.0 km)
(Projected orbit of UCAC4 204-003910 b around its host star UCAC4 204-003910)
![](UCAC4_204-003910_b_Orb.png)
The Star UCAC4 204-003910 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.143 AU ( 21433769.5 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.198 AU ( 29627070.7 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.302 AU ( 45145099.3 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.444 AU ( 66432991.3 km)
Radiation at Planetary Boundary of UCAC4 204-003910 b : 0.00 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star UCAC4 204-003910)
![](UCAC4_204-003910_b_OrbH.png)
Kopparapu Recent Venus for Star UCAC4 204-003910 distance : 0.161 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star UCAC4 204-003910 distance : 0.204 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star UCAC4 204-003910 distance : 0.197 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star UCAC4 204-003910 distance : 0.217 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star UCAC4 204-003910 distance : 0.394 AU
Kopparapu Outer Boundary for Early Mars for Star UCAC4 204-003910 distance : 0.416 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star UCAC4 204-003910)
![](UCAC4_204-003910_b_OrbK.png)
Original Kopparapu Recent Venus for Star UCAC4 204-003910 distance : 0.160 AU
Original Kopparapu Runaway Greenhouse for Star UCAC4 204-003910 distance : 0.211 AU
Original Kopparapu Moist Greenhouse for Star UCAC4 204-003910 distance : 0.212 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star UCAC4 204-003910 distance : 0.400 AU
Original Kopparapu Outer Boundary for Early Mars for Star UCAC4 204-003910 distance : 0.416 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star UCAC4 204-003910)
![](UCAC4_204-003910_b_OrbKO.png)
(Position in Stellar Map of star UCAC4 204-003910 and its Exoplanet UCAC4 204-003910 b)
![](UCAC4_204-003910_b_STZ0.png)
(Zoomed position in Stellar Map of star UCAC4 204-003910 and its Exoplanet UCAC4 204-003910 b (zoom level 3))
![](UCAC4_204-003910_b_STZ3.png)
(Synthetic Spectrum of star UCAC4 204-003910*)
![](UCAC4_204-003910_b_Spc.png)
*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