Dictionary of Nomenclature of Celestial Objects
(Last update: 26-Apr-2024)

Result of query: info cati Em$

Details on Acronym:   Em
  
Em (Emission Obj.) (Not yet in Simbad)
***** Avoid the usage of Em, prefer [M61b]
Originof the Acronym: A = Assigned by the author(s)

Details on Acronym:   Em
  
Em (Emission obj.)
Write:<<PN Em N>>
N: 3
Object:PN  (SIMBAD class: PlanetaryNeb = Planetary Nebula)
Stat:is completely incorporated in Simbad
Note:Nos 1,2,5. PK Nomenclature. Other objects are [M61b].
Ref:=1961PASP...73..264M
byMcCUSKEY S.W.
 Publ. Astron. Soc. Pac., 73, 264-265 (1961)
  Emission objects near Selected Area 158.
oTable I: <[M61b] N> (Nos 1-7), <PN Em N> (Nos 1, 2, 5)