2MASS J11193254−1137466
2MASS J11193254–1137466 AB is a planetary mass binary located light-years from the Earth in the constellation Crater. The components of 2MASS J1119–1137 are each roughly four Jupiter masses. The planetary-mass objects are probably a part of the TW Hydrae association which has an age of approximately 10 million years. The planetary-mass objects are candidate rogue planets.
Overview
The object was found by a team of scientists from Canada, the United States and Chile during a search for unusually red brown dwarfs. The search used data of 3 surveys: SDSS, 2MASS and WISE. was one of the reddest and, according to the authors, the most interesting object found. Results of the work were published in December 2015.In April 2016, the first detailed study of the object was published. The investigators conducted its infrared spectroscopy on the telescope Gemini South. Radial velocity and proper motion were also calculated. The astronomers determined low surface gravity and moderate age of.
In November 2016 and March 2017, was imaged by the telescope Keck II with adaptive optics technique, which revealed its binarity. The angular separation of components is arcseconds. Their stellar magnitudes are roughly equal. Total mass of the system is estimated as 7.4 Jupiter masses. Their total bolometric luminosity is approximately 0.00004 solar units. The estimated orbital period is 90 years.
One of the components of the binary is rotating rapidly, having a period of 3.02 hours while the typical rotation period for young brown dwarfs is 10 hours.