WEBDA page for open cluster Alessi 21

Basic Parameters			DSS Image: 45 x 45 arcminutes
Right Ascension (2000)	07 10 47
Declination (2000)	-09 20 24
Galactic longitude	223.44
Galactic latitude	0.00
Distance [pc]	500
Reddening [mag]	0.07
Distance modulus [mag]	8.71
Log Age	7.47
Metallicity
Notes

Numbering system:

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WEBDA content

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Other links

• Deep Sky Browser
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