WEBDA page for open cluster Alessi 20

Basic Parameters			DSS Image: 36 x 36 arcminutes
Right Ascension (2000)	00 10 33
Declination (2000)	+58 45 35
Galactic longitude	117.64
Galactic latitude	-3.69
Distance [pc]	450
Reddening [mag]	0.22
Distance modulus [mag]	8.95
Log Age	8.22
Metallicity
Notes

Numbering system:

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WEBDA content

• Available data
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• UBV colour magnitude diagram
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Archives

Other links

• Deep Sky Browser
• SIMBAD at CDS

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