Dictionary of Nomenclature of Celestial Objects
(Last update: 23-Oct-2020)

Result of query: info cati M51]$

Details on Acronym:   [M51]
   [M51] (Mayall, 1951)= ([M51a]) = (My) (Not yet in Simbad) Write:<<[M51] NNN>> N: 139 Object:?  (SIMBAD class: Unknown = Object of unknown nature) Note:Observations with the 10-inch Metclaf telescope in South Africa of pecliar spectra objects.
Among then 6 are PN My. Ref:=1951BHarO.920...32M byMAYALL M.W. Harvard Bull., 920, 32-37 (1951) New peculiar spectra. oTable I: <[M51] NNN> (Nos 1-139) = <PN My NN> for (Nos 45, 47, 48, 56, 59, 60).

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