Complex sentence: A stellar companion has been listed for ρ Coronae Borealis in the Washington Visual Double Star Catalog, but no further information is available on it, so it may be just a line-of-sight optical companion.
Split into simpler sentences: A stellar companion has been listed for ρ Coronae Borealis in the Washington Visual Double Star Catalog, but no further information is available on it. It may be just a line-of-sight optical companion.