CFBDSIR J2149-0403 is one of the best-studied rogue planets, discovered in 2012. It is a free-floating planetary-mass object that does not belong to any star system. Its spectral analysis reveals it has a cool atmosphere, with potential methane and water clouds.
Orbital Characteristics
Orbital Characteristics: No orbit; it floats freely through interstellar space.
Physical Characteristics
Mass: ~4-7 Jupiter masses
Radius: ~1.15 Jupiter radii
Temperature: ~430°C (806°F)
Atmospheric Features
The atmosphere of CFBDSIR J2149-0403 is cool and may contain methane and water clouds, indicative of complex chemistry.
Further studies could provide insights into the atmospheric composition of rogue planets.
Discovery & Future Studies
Discovered in 2012, CFBDSIR J2149-0403 represents an important example of rogue planets and their properties.
Studying such planets can enhance our understanding of planetary formation and evolution in different environments.
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HD 189733 b: A Gas Giant
General Information
Distance from Earth: ~20,000 light-years
OGLE-2016-BLG-1928 is a small, Earth-sized rogue planet discovered through gravitational microlensing. It is among the smallest known rogue planets and is thought to be a rocky or icy body wandering through the galaxy.
Orbital Characteristics
Orbital Characteristics: No orbit; detected via microlensing as it passed between a distant star and Earth.
The atmosphere of OGLE-2016-BLG-1928 is likely extremely thin or non-existent, given its small size and cold temperature.
Further studies could provide insights into the characteristics of small rogue planets.
Discovery & Future Studies
Discovered through gravitational microlensing, OGLE-2016-BLG-1928 highlights the capabilities of this method in detecting small celestial objects.
Studying such planets can improve our understanding of planet formation and the diversity of celestial bodies in the galaxy.
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Kepler-7b: A Gas Giant Planet
General Information
Distance from Earth: ~7.2 light-years
WISE J085510.83-071442.5, also known as WISE 0855, is one of the coldest known rogue planets, with temperatures similar to Jupiter’s. It was discovered using the WISE infrared space telescope and has a thick atmosphere possibly containing water ice clouds.
Orbital Characteristics
Orbital Characteristics: No orbit; it is an isolated planetary-mass object.
Physical Characteristics
Mass: ~3-10 Jupiter masses
Radius: ~1.1 Jupiter radii
Temperature: ~-48°C (-54°F)
Atmospheric Features
The atmosphere of WISE J085510.83-071442.5 may contain water ice clouds, contributing to its cold temperatures.
Studies of its atmosphere can enhance our understanding of cold planetary objects and their formation.
Discovery & Future Studies
Discovered using the WISE infrared space telescope, WISE J085510.83-071442.5 represents an important find in the search for rogue planets.
Its cold temperature and isolated nature provide a unique opportunity for studying planetary atmospheres.
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GJ 504b
General Information
Distance from Earth: ~7.2 light-years
WISE J085510.83-071442.5, also known as WISE 0855, is one of the coldest known rogue planets, with temperatures similar to Jupiter’s. It was discovered using the WISE infrared space telescope and has a thick atmosphere possibly containing water ice clouds.
Orbital Characteristics
Orbital Characteristics: No orbit; it is an isolated planetary-mass object.
Physical Characteristics
Mass: ~3-10 Jupiter masses
Radius: ~1.1 Jupiter radii
Temperature: ~-48°C (-54°F)
Atmospheric Features
The atmosphere of WISE J085510.83-071442.5 may contain water ice clouds, contributing to its cold temperatures.
Studies of its atmosphere can enhance our understanding of cold planetary objects and their formation.
Discovery & Future Studies
Discovered using the WISE infrared space telescope, WISE J085510.83-071442.5 represents an important find in the search for rogue planets.
Its cold temperature and isolated nature provide a unique opportunity for studying planetary atmospheres.
