NGC 6618

Number of stars per data source

	Reference    1 :    7 stars
	Reference   16 :    8 stars
	Reference   33 :    3 stars
	Reference  128 :   26 stars
	Reference  192 :  309 stars

References

 1
Egret D.
(1986) Private Communication
Coordinates from SIMBAD (mainly SAO)
 16
Stephenson C.B., Sanduleak N.
(1971) Publ. Warner Swasey Obs. 1 no 1
Luminous stars in the southern Milky Way
 33
Egret D.
(1986) Private communication
Coordinates from SIMBAD (other than SAO)
 128
Lasker B.M., Russel J.N., Jenkner H., Sturch C.R., McLean B.J., Shara M.M.
(1990) Astron. J. 99, 2019
The HST guide star catalogue, version 1.0
1990AJ.....99.2019L
 192
Hanson M.M., Howarth I.D., Conti P.S.
(1997) Astrophys. J. 489, 698
The young massive stellar objects of M17
1997ApJ...489..698H