WEBDA page for open cluster Trumpler 3

Basic Parameters
Right Ascension (2000)	03 11 49
Declination (2000)	+63 11 23
Galactic longitude	138.01
Galactic latitude	4.50
Distance [pc]	690
Reddening [mag]	0.30
Distance modulus [mag]	10.12
Log Age	7.83
Metallicity
Notes

Numbering system:

Query

• The database for data on any star
• The database for all data on any star
• Make selections on data
• The database for data on Am, Ap, Be, gK, BS, SB, WR stars
• From cluster chart (plotted)
• The cross-reference table
• 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
• JHK colour magnitude diagram
• Kharchenko atlas page

Archives

Other links

• Deep Sky Browser
• SIMBAD at CDS

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