which is an additional indicator for youth.

The brown dwarf system

thumb2M1510AB and 2M1510C are separated by 250 astronomical units, making them a resolved binary in 2MASS data. The components of the inner eclipsing binary are called 2M1510A and 2M1510B. 2M1510AB is not only an eclipsing binary, but also a double-lined spectroscopic binary. This was discovered

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