NGC 6939

Number of stars per data source

	Reference  541 :   37 stars
	Reference 1095 :    6 stars

References

 541

Mermilliod J.-C., Huestamendia G., del Rio G.

(1994) Astron. Astrophys. Suppl. 106, 419

UBV photoelectric photometry of red giants in NGC 6939

1994A&AS..106..419M

 1095

Chincarini G.

(1963) Contr. Asiago No. 138

The open cluster NGC 6939