![]() The popup box shows further information about the star. Stars in the charts can be clicked and a popup box will appear. When an animation plays, all 3 charts will be updated. Unlike the local star charts, the animation buttons apply to all 3 charts. The full names of the constellations are listed on this webpage. Stereographic projection preserves angles but not areas, whereas Mollweide projection preserves areas but not angles.Ĭonstellation labels, when active, are shown in the abbreviated form. The second chart shows the all-sky map using the Mollweide projection. ![]() It is created using the stereographic projection with the GCRS north pole as the projection point. The third chart shows the stars to the south of the GCRS equator. It is created using the stereographic projection with the GCRS south pole as the projection point. The first chart shows the stars to the north of the GCRS equator. The Ra labels in the polar charts always refer to the Ra of the GCRS. When it is inactive, the grid lines are the Ra and Dec lines of the GCRS. When the precession button is active, the Ra and Dec grids show the Ra and Dec lines with respect to the mean equator and equinox of date. GCRS is practically the same as the equatorial coordinate system based on the mean equator and equinox of J2000.0. For simplicity, we will use GCRS to refer to this coordinate system. ![]() The three star charts are based on the coordinate system whose center is at Earth's center and whose axes are oriented to the same directions as those of the International Celestial Reference System (ICRS). This webpage uses the computer's clock to obtain the current time and plot star charts showing the positions of the Sun, Moon, planets and stars. labelsĬonstellation List CANVAS NOT SUPPORTED IN THIS BROWSER! Show/Hide: Sun, Moon, Planets Precession Ecliptic Galactic Milky Way Con. ![]()
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