Rogue Planets

General Information

• Distance from Earth: ~130 light-years
• 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.

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.

Physical Characteristics

• Mass: ~0.3-0.4 Earth masses
• Radius: ~0.8 Earth radii
• Temperature: Extremely cold, likely ~-230°C (-382°F)
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Atmospheric Features

• 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.

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.

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.
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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.