WEBDA page for open cluster Berkeley 91

Basic Parameters			DSS Image: 10 x 10 arcminutes
Right Ascension (2000)	21 10 52
Declination (2000)	+48 32 12
Galactic longitude	90.064
Galactic latitude	0.132
Distance [pc]	2400
Reddening [mag]	1.00
Distance modulus [mag]	15.00
Log Age	8.70
Metallicity
Notes

Numbering system:

Query

• The database for data on any star
• The database for all data on any star
• Make selections on data
• From cluster chart (plotted)
• The Budapest bibliography (Alter et al.)
• The bibliography of the last three | five | ten years

WEBDA content

• Available data
• Data collection and references
• General menu for photometric plots
• General menu for Isochrone plots (basic)
• General menu for Isochrone plots (advanced)
• UBV colour magnitude diagram
• VIc colour magnitude diagram
• JHK colour magnitude diagram

Archives

Other links

• Deep Sky Browser
• SIMBAD at CDS

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