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Sh 2-78

From Wikipedia, the free encyclopedia
Sharpless 2-78
Nebula
Observation data:epoch
Right ascension19h 03m 08s
Declination+14° 06′ 58″[1]
Distance2170 ly
Apparent magnitude (V)14.0
Apparent diameter27'[2]
ConstellationAquila
Physical characteristics
Radius7.6[3] ly
DesignationsPN G046.8+03.8
See also:Lists of nebulae

Sh 2-78 is aPlanetary nebula inAquila.[4]

It was discovered byStewart Sharpless while assembling hiscatalogue, and identified as a planetary nebula in 1990. It has a central star with a magnitude of 17.[5] The central star is a variable star, with a variability of 0.3 in magnitude.[6]

References

[edit]
  1. ^"sh 2-78 Search".
  2. ^Mohery, M.; Ali, A.; Mindil, A.; Alghamdi, S.A."Interacting planetary nebulae III: Verification and galactic population based on the measurements of Gaia EDR3".
  3. ^"Astrobasics Sharpless (Sh2)".
  4. ^Cappellaro, Enrico; Turatto, Massimo; Salvadori, L.; Sabbadin, Federico."Four newly identifield planetary nebulae in the Palomar plate 18h48m +12".
  5. ^Acker, A.; Ochsenbein, F.; Stenholm, B.; Tylenda, R.; Marcout, J.; Schohn, C."Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (1992)".
  6. ^De Marco, Orsola; Passy, Jean-Claude; Frew, D.J.; Maxwell, Moe; Jacoby, G.H."The binary fraction of planetary nebula central stars – I. A high-precision, I-band excess search".
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