NGC 581

Number of stars per data source

	Reference    1 :    3 stars
	Reference    4 :    2 stars
	Reference   15 :  119 stars
	Reference   89 :    9 stars
	Reference   90 :    3 stars
	Reference  150 :   24 stars
	Reference  264 :  199 stars

References

 1

Egret D.

(1986) Private Communication

Coordinates from SIMBAD (mainly SAO)

 4

Hoag A.A., Johnson H.L., Iriarte B., Mitchell R.I., Hallam K.L., Sharpless S.

(1961) Publ. Us. Nav. Obs. XVII part VII, 347

Photometry of stars in galactic cluster fields

 15

Moffat A.F.J., Vogt N.

(1974) Veroeff. Astr. Inst. Univ. Bochum no 2

Photographische UBV-Helligkeiten in 14 jungen Sternhaufen der nordlichen Milchstrasse

 89

Oja T.

(1966) Ark. Astr. 4, 15

Determinations of proper motions for stars in the galactic clusters Messier 103 and Trumpler 1 and in their surroundings

1966ArA.....4...15O

 90

Mermilliod J.-C.

(1988) personal work

Positions estimated by comparison with other stars in the field

 150

Evstigneeva K.M., Shokin Yu.A., Yuferev A.O.

(1991) Trudy Gos. Astr. Inst. Shternberga 62, 234

Precise positions of reference stars in opn clusters NGC 457 and NGC 581

 264

Sanner J., Geffert M., Brunzendorf J., Schmoll J.

(1999) Astron. Astrophys. 349, 448

Photometric and kinematic studies of open star clusters. I. NGC 581 (M 103)

1999A&A...349..448S