Right ascension 05 03 07.53 Distance 1.8 kly (0.55 kpc) ly Constellation Lepus | Declination −15° 36′ 22.7″ Apparent dimensions (V) 12′.733 × 12′.733 | |
Apparent magnitude (V) Integrated: 12.2–14.3; Cental star: 15.4 | ||
Abell 7 is a faint planetary nebula located 1800 light-years away in the constellation of Lepus. It has a generally spherical shape about 8 light-years in diameter. Within the sphere are complex details that are brought out by narrowband filters. Abell 7 is estimated to be only 20,000 years old, but the central star, a fading white dwarf, is estimated to be some 10 billion years old.
References
Abell 7 Wikipedia(Text) CC BY-SA