Eta Serpentis

Starbox short
name=η Serpentis
epoch=J2000.0
constell=Serpens
ra=18^h 21^m 18.6^s
dec=-02° 53' 56"
spectral=K0III-IV
appmag_v=+3.23
absmag_v=+1.84
dist_ly=61.8 ± 0.9
dist_pc=18.9 ± 0.3
names=58 Serpentis, HR 6869,
HD 168723, SAO 142241,
HIP 89962, CCDM 18214-0253

Eta Serpentis (η Ser / η Serpentis) is a binary star in the constellation Serpens. It carries the seldom used traditional name Tang (Mandarin 唐朝 - Táng Cháo), after the Tang Imperial Dynasty.

The primary, Eta Serpentis A is an orange K-type giant with an apparent magnitude of +3.23. It has a distant 12th magnitude companion, Eta Serpentis B, 3 arcminutes away. The Eta Serpentis star system is approximately 61.8 light years from Earth.