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The Position of Neptune in the Night Sky

Neptune Finder Chart 2011

Finder chart for Neptune during 2010 (Copyright Martin J Powell, 2010)

Finder Chart for Neptune for 2010, with positions marked on the first day of each month (a Southern hemisphere view can be found here). Where the planet is too close to the Sun to be visible, the path is shown by a dashed line.

Neptune reached opposition to the Sun (when it is brightest in the sky for the year and closest to the Earth) on August 20th, when its apparent magnitude was +7.8 and its apparent diameter was 2".4 (2.4 arcseconds). The planet was then 29.006 AU (4.339 billion kms or 2.696 billion miles) from Earth. On opposition day the planet was positioned less than 10' (10 arcminutes) from the border with Aquarius.

Stars on the chart are shown down to magnitude +8.5. Right Ascension and Declination co-ordinates are marked around the border, for cross-referencing with a star atlas. Printer-friendly (greyscale) versions of the chart are available for Northern and Southern hemisphere views.

The apparent magnitudes of selected stars in the region (down to magnitude +8.5) are shown in brackets in this chart.

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The Position of Neptune in the Night Sky

Neptune Finder Chart 2011

Appearance of the Naked-Eye Planets

Planetary Movements through the Zodiac


Copyright  Martin J Powell  February 2009, modified December 2009, March 2011