NGC 6939

Number of stars per data source

	Reference  335 :  997 stars
	Reference  360 :   17 stars

References

 335

Henden A.

(2003) ftp://ftp.aavso.org/public/calib/

Henden field photometry

 360

Kafka S., Gibbs II D.G., Henden A.A., Honeycutt R.K.

(2004) Astron. J. 127, 1622

WIYN open cluster study. XX. Photometric monitoring of the Galactic cluster NGC 6939

2004AJ....127.1622K