Planet in Polar Orbit Around Brown Dwarf Sausage
- Astronomers have identified an exoplanet orbiting a binary system of brown dwarfs in an unexpected manner: a polar orbit.
- The discovery adds to the growing catalog of exoplanets that defy expectations based on our own solar system.
- The exoplanet, known as 2M1510 (AB) b, orbits a triple or quadruple system of brown dwarfs designated 2M1510 (full name 2Mass J15104761–2818234).Discovered in 2018, the system is located...
Exoplanet discovered in Unusual Polar Orbit Around Brown Dwarf Binary
Astronomers have identified an exoplanet orbiting a binary system of brown dwarfs in an unexpected manner: a polar orbit. Designated 2M1510 (AB) b, the exoplanet’s orbit is perpendicular to the plane in which the brown dwarfs orbit each other.
Atypical planetary Systems Challenge Existing Models
The discovery adds to the growing catalog of exoplanets that defy expectations based on our own solar system. While initial exoplanet discoveries presented stark contrasts to the familiar planets of our solar system,scientists continue to uncover planetary configurations that challenge existing formation models.
2M1510 (AB) b: A Unique Exoplanet
The exoplanet, known as 2M1510 (AB) b, orbits a triple or quadruple system of brown dwarfs designated 2M1510 (full name 2Mass J15104761–2818234).Discovered in 2018, the system is located approximately 120 light-years away in the constellation Libra.
The brown dwarfs 2M1510A and 2M1510B form an eclipsing binary system, a relatively rare occurrence among known brown dwarfs. The 2M1510 system is considered young, belonging to the Argus moving group, estimated to have formed roughly 45 million years ago.
Polar Orbit Discovery
Thomas Baycroft, from the University of Birmingham, and his team steadfast that the exoplanet 2M1510 (AB) b orbits the eclipsing binary in a polar orbit. This is the first confirmed instance of a planet in a polar orbit around a brown dwarf binary.
Observations were conducted using the European Southern Observatory’s Very Large Telescope (ESO VLT). According to Amaura triaud, a colleague of Baycroft, the discovery was serendipitous. The findings highlight the diversity of exoplanetary systems and the potential for unexpected discoveries.
“It was a fully random and surprising discovery that fell into our lap,” Triaud said.
Scientists anticipate further research into this unusual exoplanet.
Video
amaury triaud GMT20240418 093449
https://www.youtube.com/watch?v=3n7M28ZU6os
References
- University of Birmingham. Astronomers find rare twist in exoplanets twin star orbit. April 16, 2025.
- Science Advances. Science Advances online. April 16, 2025.
Exoplanet 2M1510 (AB) b: Your questions Answered
Q: What’s the big news in astronomy right now?
A: Astronomers have discovered a new exoplanet, 2M1510 (AB) b, with a very unusual orbit. It’s orbiting a binary system of brown dwarfs in a polar orbit. this means its path around the stars is perpendicular to the plane in which the brown dwarfs orbit each other – a configuration that is rarely observed.
Q: What is a polar orbit, and why is it so important?
A: In a polar orbit, an object circles a star (or, in this case, a binary system) at a nearly 90-degree angle relative to the stars’ orbital plane. this discovery is significant because it defies current models of how planets generally form.
Q: Where is this exoplanet located?
A: The exoplanet 2M1510 (AB) b is located approximately 120 light-years away in the constellation Libra.
Q: What kind of system is 2M1510 (AB) b orbiting?
A: The exoplanet orbits a system composed of brown dwarfs. The full designation of the system is 2Mass J15104761–2818234, which is a triple or quadruple system. Within that system, two brown dwarfs, 2M1510A and 2M1510B, form an eclipsing binary.
Q: What is an eclipsing binary?
A: An eclipsing binary system is a type of binary star system in which the stars’ orbit is aligned so that,from Earth’s perspective,one star passes in front of the other,causing regular dips in brightness (eclipses). This occurrence is relatively rare among known brown dwarfs.
Q: When was this exoplanet discovered?
A: The system itself was discovered in 2018, but the polar orbit was confirmed more recently.
Q: How was this discovery made?
A: Observations were conducted using the European Southern Observatory’s Very Large Telescope (ESO VLT).The discovery of the polar orbit was,according to Amaury Triaud,a colleague of Thomas Baycroft,serendipitous.
Q: Who was involved in this discovery?
A: The discovery team was led by Thomas Baycroft from the University of Birmingham.
Q: What does this discovery mean for our understanding of planetary formation?
A: This discovery challenges existing models of planet formation. It suggests that planetary configurations can be far more diverse than previously imagined.
Q: Where can I find more facts about this discovery?
A:
Hear’s a summary of the key sources:
University of Birmingham: Astronomers find rare twist in exoplanets twin star orbit
Science Advances: Science Advances online
Q: Where do I find the video?
A: The video, which is from Amaury Triaud, can be found at: https://www.youtube.com/watch?v=3n7M28ZU6os
Q: What are the next steps in the research?
A: Scientists are anticipating further research into this unusual exoplanet to learn more its properties and formation history.