Object: NGC 1644 (*)
Open Cluster, type OCL, in Dorado
Right Ascension (2000.0): 04:37:39.6 (h:m:s)
Declination (2000.0): -66:11:49 (deg:m:s)
m_b: 12.5 (mag) , m_v: 12.9 (mag)
Dimension: 1.60 (arcmin)
Cross Identifications: ESO 84-SC30, in LMC