Cha 1107−7626
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Cha 1107−7626
Cha 1107−7626 (Cha J11070768−7626326) is a free-floating planetary-mass object in the Chamaeleon I star-forming region, about distant from the Solar System. It is the lowest-mass object with hydrocarbons detected in its disk (as of May 2025). The object is located north-west of IC 2631. Cha 1107−7626 was discovered in 2008 by Kevin Luhman et al. with the Spitzer Space Telescope and the Magellan II telescope. The researchers estimated a spectral type of L0, due to it having weaker TiO and VO absorption compared compared to other low-mass members of the Chamaeleon I region, such as OTS 44 and Cha 110913−773444. Initially the mass was estimated to be 0.004-0.01 (4.2-10.5 ). A work by Laura Flagg et al. (2025) observed the object with the JWST instruments NIRSpec and MIRI. This work refined the mass of Cha 1107−7626 to 6-10 . It also detected hydrocarbons in the disk of this planetary-mass object. The circumstellar disk The Spitzer photometry showed an ...
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