Facts and figures

Stars (totals)

Double stars

2950 double and multiple stars designated

contains all pairs with separations between 0.5" and 60"

main component must be brighter than 8.5 mag

secondary component must be brighter than 10 mag

orientation of symbol gives position angle

length of symbol gives separation

strength of symbol hints at magnitude difference

recent data from Washington Double Star Catalog (WDS)

Variable stars

Stars with exoplanets

Deep sky objects altogether

Open clusters

Globular clusters


Star clouds

Planetary nebulae

Galactic nebulae

Dark nebulae


Groups of galaxies

Clusters of galaxies