NGC 3680

Number of stars per data source

	Reference  437 :  391 stars
	Reference  485 :    4 stars

References

 437

Platais V.K., Girard T.M., Platais I., van Altena W.F., Ianna P.A., Cannon R.D.

(1995) Astron. J. 109, 672

A proper-motion study of the open cluster NGC 3680

1995AJ....109..672P

 485

Baumgardt H., Dettbarn C., Wielen R.

(2000) Astron. Astrophys. Suppl. 146, 251

Absolute proper motions of open clusters. I. Observational data

2000A&AS..146..251B