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==Host star== |
==Host star== |
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PSR J2322−2650 is a pulsar some 750 light-years (230 parsecs) away from Earth in the in the constellation [[Piscis Austrinus]].<ref>{{cite news |date=December 19, 2025 |title=Bizarre Lemon-Shaped Exoplanet Found By Webb Telescope |work= Jamie Carter |publisher=Forbes |url=https://www.forbes.com/sites/jamiecartereurope/2025/12/19/bizarre-lemon-shaped-exoplanet-found-by-webb-telescope/ |access-date=December 20, 2025}}</ref> The pulsar completes at around 300 rotations a second, equivalent to 18,000 rotations a minute. While the mass and size of PSR J2322−2650 is not directly measured with high precision, the mass is likely to be around 1.4 solar masses with a diameter of |
PSR J2322−2650 is a pulsar some 750 light-years (230 parsecs) away from Earth in the in the constellation [[Piscis Austrinus]].<ref>{{cite news |date=December 19, 2025 |title=Bizarre Lemon-Shaped Exoplanet Found By Webb Telescope |work= Jamie Carter |publisher=Forbes |url=https://www.forbes.com/sites/jamiecartereurope/2025/12/19/bizarre-lemon-shaped-exoplanet-found-by-webb-telescope/ |access-date=December 20, 2025}}</ref> The pulsar completes at around 300 rotations a second, equivalent to 18,000 rotations a minute. While the mass and size of PSR J2322−2650 is not directly measured with high precision, the mass is likely to be around 1.4 solar masses with a diameter of to 20 kilometers.<ref>{{cite news |date= |title=PSR J2322-2650 |work= ExoKyoto |publisher= |url=https://www.exoplanetkyoto.org/exohtml/PSR_J2322-2650.html |access-date=December 20, 2025}}</ref> |
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==References== |
==References== |
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Latest revision as of 13:17, 20 December 2025
Extrasolar pulsar planet
PSR J2322−2650 b is a tidally locked exoplanet discovered in 2017, orbiting the millisecond pulsar PSR J2322−2650.[1][2] In 2025, the James Webb Space Telescope found that the planet’s atmosphere is dominated by helium and carbon, likely featuring clouds of carbon soot that condense to create diamonds, but a conspicuous and unexplained absence of nitrogen and oxygen. PSR J2322−2650 b orbits approximately 1 million miles from its host star—a distance equivalent to less than 1% of earth’s orbit. The gravitational pull from the host star is so intense that the planet has been stretched into the shape of a lemon.[3]
PSR J2322−2650 is a pulsar some 750 light-years (230 parsecs) away from Earth in the in the constellation Piscis Austrinus.[4] The pulsar completes at around 300 rotations a second, equivalent to 18,000 rotations a minute. While the mass and size of PSR J2322−2650 is not directly measured with high precision, the mass is likely to be around 1.4 solar masses with a diameter of between 10 to 20 kilometers.[5]
- ^ Spiewak, R; Bailes, M; Barr, E D; Bhat, N D R; Burgay, M; Cameron, A D; Champion, D J; Flynn, C M L; Jameson, A; Johnston, S; Keith, M J; Kramer, M; Kulkarni, S R; Levin, L; Lyne, A G; Morello, V; Ng, C; Possenti, A; Ravi, V; Stappers, B W; van Straten, W; Tiburzi, C (March 21, 2018). “PSR J2322−2650 – a low-luminosity millisecond pulsar with a planetary-mass companion”. Monthly Notices of the Royal Astronomical Society. 475 (1): 469–477. doi:10.1093/mnras/stx3157.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - ^ “James Webb Space Telescope discovers a lemon-shaped exoplanet unlike anything seen before: ‘What the heck is this?’“. Space.com. December 16, 2025. Retrieved December 20, 2025.
- ^ “Exoplanet PSR J2322-2650b Orbiting a Pulsar”. nasa.gov. NASA. December 16, 2025. Retrieved December 20, 2025.
- ^ “Bizarre Lemon-Shaped Exoplanet Found By Webb Telescope”. Jamie Carter. Forbes. December 19, 2025. Retrieved December 20, 2025.
- ^ “PSR J2322-2650”. ExoKyoto. Retrieved December 20, 2025.
