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DI Chamaeleontis

Star in the constellation Chamaleon From Wikipedia, the free encyclopedia

DI Chamaeleontis
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DI Chamaeleontis, also known as Hen 3-593 or HIP 54365, is a quadruple star system in the constellation Chamaeleon. The system is roughly 700 light years from Earth.

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A light curve for DI Chamaeleontis, plotted from TESS data,[6]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...

DI Cha is a variable star of the T Tauri type, young stellar objects just approaching the main sequence. It varies erratically between visual magnitudes 10.65 and 10.74.[4] Although it is visually faint, it was noticed because of the prominent emission lines in its spectrum.[7]

In 1977, DI Cha was observed to have a much fainter companion.[8] The separation was later measured at 4.6", approximately 644 astronomical units (AU).[9] The B component was discovered to be a pair of stars separated by only 0.066", about 10 AU,[10] both with spectral type M5.5.[11] Finally, the variable primary star was found to have a faint companion 0.2" (therefore ~30 AU) away, of spectral type M6.[11]

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