Dictionary of Nomenclature of Celestial Objects
(Last update: 22-Mar-2024)

Result of query: info cati M81]$

Details on Acronym:   [M81]
  
[M81] (McConnell, 1981)= [M81a]
Write:<<[M81] I-NNN>>
<<[M81] II-NN>>
N: 737+34
Object:Em*  (SIMBAD class: EmLine* = Emission-line Star)
Note:Table I: format 'I-NNN', N=737 early-type emission stars. Table II: format 'II-NN', N=34 late-type emission stars.
Ref:=1981A&AS...44..387M
byMacCONNELL D.J.
 Astron. Astrophys., Suppl. Ser., 44, 387-399 (1981)
  Discoveries on southern red-sensitive objective-prism plates III: new stars having Hα in emission.
oTable I: <[M81] I-NNN> N=737. Table II: <[M81] II-NN> N=34
=E=Catalogue in electronic form as <J/A+AS/44/387/>
Originof the Acronym: S = Created by Simbad, the CDS Database

Details on Acronym:   [M81a]
  
[M81a] (McConnell, 1981)
***** Avoid the usage of [M81a], prefer [M81]
Originof the Acronym: S = Created by Simbad, the CDS Database