Dictionary of Nomenclature of Celestial Objects
(Last update: 10-Apr-2024)

Result of query: info cati MRS NGC 5457$
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Details on Acronym:   MR85
  
MR85 (McCall+Rybski+, 1985)
***** Avoid the usage of MR85, prefer MRS
Originof the Acronym: L (2007ApJ...655..814F)

Details on Acronym:   MRS
  
MRS (McCall+Rybski+Shields)= (MR85)
Write:<<MRS NGC NNNN (+xxxx+yyyy)>>
<<MRS IC NNN (+xxxx+yyyy)>>
N: 99
Object:HII  (SIMBAD class: HIIReg = HII Region)
Note:Tables 6 and 18: HII regions in 19 NGC and 1 IC galaxies (Table 1). In the format '+xxxx+yyyy' stands for offset in seconds from the center of the galaxy, right ascension offset: +xxxx = east, -xxxx = west declination offset: +yyyy = north, -yyyy = south
Ref:=1985ApJS...57....1M
byMcCALL M.L. , RYBSKI P.M., SHIELDS G.A.
 Astrophys. J., Suppl. Ser., 57, 1-62 (1985)
  The chemistry of galaxies. I. The nature of giant extragalactic H II regions.
oTables 6, 18: <MRS NGC NNNN (+xxxx+yyyy)>, <MRS IC 342 (+xxxx+yyyy)> N=99
Originof the Acronym: S = Created by Simbad, the CDS Database