Astronomy and Space
39 Arietis, officially named Lilii Borea , is a star in the northern constellation of Aries. It is visible to the naked eye with an apparent visual magnitude of +4.5. The distance to this star, as determined from an annual parallax shift of 19.01 mas, is approximately 172 light-years (53 parsecs). This star was formerly located in the obsolete constellation Musca Borealis.
BB Phoenicis.
Heliophysics Science Division.
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