PIA21629: Neptune from Saturn

Neptune from Saturn


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Figure 1
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On Aug. 25, 1989, NASA's Voyager 2 made its historic flyby of Neptune and that planet's largest moon Triton. The Cassini mission is publishing this image to celebrate the anniversary of that event.

Neptune appears in this natural color composite as a pale blue disk (similar to Cassini's image of Uranus from 2014, see PIA17178 ), just below and to the right of image center. Most of the faint specks in the image are background stars, although some are likely cosmic rays (charged particles that strike the camera detector).

A cropped and magnified version (Figure 1) is provided in monochrome with Triton visible as a point of light above and to the left of Neptune.

In imaging Neptune, Cassini's solar system family portrait-taking is complete. The mission's planetary photojournal includes all of the major planets except Mercury, which is too close to the Sun to be imaged, as well as dwarf planet Pluto.

This view was acquired by the Cassini narrow-angle camera on Aug. 10, 2017, at a distance of approximately 2.72 billion miles (4.38 billion kilometers) from Neptune. Red, blue and green filter images were combined to create the natural color image.

Background Info:

The Cassini mission is a cooperative project of NASA, ESA (the European Space Agency) and the Italian Space Agency. The Jet Propulsion Laboratory, a division of Caltech in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colorado.

For more information about the Cassini-Huygens mission visit https://saturn.jpl.nasa.gov and https://www.nasa.gov/cassini . The Cassini imaging team homepage is at https://ciclops.org .

Cataloging Keywords:

Name Value Additional Values
Target Neptune Mercury, Pluto, Saturn, Sun, Triton, Uranus
System Neptune Pluto, Saturn, Uranus
Target Type Planet Dwarf Planet, Satellite, Sun
Mission Voyager Cassini-Huygens
Instrument Host Voyager 2 Cassini Orbiter
Host Type Flyby Spacecraft Orbiter
Instrument Imaging Science Subsystem (ISS)
Detector Narrow Angle Camera
Extra Keywords Color, Visual
Acquisition Date
Release Date 2017-08-25
Date in Caption 1989-08-25 2017-08-10
Image Credit NASA/JPL-Caltech/Space Science Institute
Source photojournal.jpl.nasa.gov/catalog/PIA21629
Identifier PIA21629