NGC 637

Number of stars per data source

	Reference  542 : 3347 stars

References

 542
Yadav R.K.S., Kumar B., Subramaniam A., Sagar R., Mathew B.
(2008) Mon. Not. R. Astron. Soc. 390, 985
Optical and near-infrared photometric study of the open cluster NGC 637 and 957
2008MNRAS.390..985Y