NY Virginis
NY Virginis is a binary star about away. The primary belongs to the rare class of subdwarf B stars, being former red giants with their hydrogen envelope completely stripped by a stellar companion. The companion is a red dwarf star. The binary nature of NY Virginis was first identified in 1998, and the extremely short orbital period of , together with brightness variability on the timescale of 200 seconds was noticed, resulting in the identification of the primary star as a B-type subdwarf in 2003. Under a proposed classification scheme for hot subdwarfs it would be class sdB1VII :He1. This non-standard system indicates that it is a "normal" luminosity for a hot subdwarf and that the spectrum is dominated by hydrogen rather than helium. Planetary system. In 2011 one superjovian planet NY Virginis (AB) b on a wide orbit was discovered utilising the eclipse timing method, and one more was marked as suspected. The second planet, NY Virginis (AB) c, was confirmed in 2014. Orbits of these two planets are near or at a 3:10 mutual orbital resonance. The planetary system parameters were updated in 2019, because significant eccentricity of the orbits was detected. NY Virginis NY