Ninnisig

Ninnisig is a red giant star in the constellation Lyra, approximately 760 light-years away from Earth. Ninnisig is an orange bright giant star of the spectral type K0II, which means that it possesses a surface temperature of about 5,000 K, and is many times bigger and brighter, yet cooler, than the Sun. Ninnisig and Erragal are two ancient Sumerian deities associated with a pair of stars, identified as Theta Lyrae and Eta Lyrae (Aladfar). BD+37°3399 and BD+37°3399B are respectively 10th- and 11th-magnitude companions, although not at the same distance. BD+37°3399 is a giant star with a spectral type of K2III. It is therefore almost the same temperature as Ninnisig. BD+37° 3399B is an 11th magnitude star of an unknown spectral type.