planetary nebulae. The central star of the nebula is the fast-evolving star SAO 244567. Until the early 1970s, it was observed on Earth as a preplanetary nebula...
8 KB (803 words) - 14:09, 3 December 2023
1980 A3 RR Lyr variable, Vmax = 9.92m, Vmin = 11.24m, P = 0.451848 d SAO 244567 V839 17h 16m 21.08s −59° 29′ 23.3″ 10.75 -2.96 18000 B3e central star...
20 KB (220 words) - 00:00, 26 August 2024