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J1407b is a substellar object, either a free-floating planet or brown dwarf, with a massive circumplanetary disk or ring system.It was first detected by automated telescopes in 2007 when its disk eclipsed the star V1400 Centauri, causing a series of dimming events for 56 days.
V1400 Centauri, also known as 1SWASP J140747.93−394542.6 or simply J1407, is a young, pre-main-sequence star that was eclipsed by the likely free-floating substellar object J1407b in April–June 2007.
Other ring gaps in J1407b's disk may also contain exomoons. Beta Pictoris: Beta Pictoris b: 9.3 +2.6 −2.5 M J: 10.26 0.03 to 0.05 AU ≳15 Found via the predicted misaligment of the planet's obliquity, which is yet to be confirmed by JWST observations but is currently likely. [23] N/A 2MASS J1119-1137A or B: 3.7 M J: 3.6 ± 0.9 separation ...
Motion interpolation of seven images of the HR 8799 system taken from the W. M. Keck Observatory over seven years, featuring four exoplanets. This is a list of extrasolar planets that have been directly observed, sorted by observed separations. This method works best for young planets that emit infrared light and are far from the glare of the star.
The circumstellar disk or ring system of J1407b is about 0.6 astronomical units (90,000,000 km; 56,000,000 mi) in radius. [43] J1407b's transit of V1400 Centauri revealed gaps and density variations within its disk or ring system, which has been interpreted as hints of exomoons or exoplanets forming around J1407b. [43]
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The planet would be ejected unless its periastron distance was increased away from the binary, such as by a gravitational encounter with a passing star during apastron. An analysis of the motions of 461 nearby stars using Gaia observations revealed two (HIP 59716 and HIP 59721, a possible loosely bound binary system) that passed within 1 pc (3. ...
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