NGC 3680

Number of stars per data source

	Reference  250 :  219 stars
	Reference  326 :   21 stars

References

 250

Hawley S.L., Tourtellot J.G., Reid I.N.

(1999) Astron. J. 117, 1341

Low-mass stars in open clusters. I. NGC 2516 and NGC 3680

1999AJ....117.1341H

 326

Hog E., Fabricius C., Makarov V.V., Urban S., Corbin T., Wycoff G., Bastian U., Schwekendiek P., Wicenec A.

(2000) Astron. Astrophys. 357, L27

The Tycho-2 Catalogue

2000A&A...355L..27H