Collections
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Possible YSOs by michiharu (10 subjects)
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Marton YSOs Class I/II by michiharu (10 subjects)
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YSO by Shigeru (10 subjects)
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known #YSO and #YSOc by mboschmd (10 subjects)
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Favorites by michiharu (10 subjects)
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Vetted YSOs by TED91 (10 subjects)
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S2 Stars with unknown spectral class. by artman40 (10 subjects)