Constituent Image for Jupiter/Ganymede Compass and Scale Image

Constituent Image for Jupiter/Ganymede Compass and Scale Image

Credits

NASA, ESA, and E. Karkoschka (University of Arizona)

About The Object
Object Name Jupiter, Ganymede
Object Description Planet with Jovian Satellite Visible
Distance The semi-major axis of Jupiter's orbit about the sun is 5.2 astronomical units (483 million miles or 778 million km).
Dimensions The planet has a diameter of roughly 88,789 miles (142,984 km) at the equator.
About The Data
Data Description The Hubble data are taken from the HST proposal : E. Karkoschka (University of Arizona).
Instrument HST>WFPC2
Exposure Dates April 9, 2007
Filters 410 nm, 502 nm, and 673 nm
About The Image
Color Info These images are a composite of separate exposures made by the WFPC2 instrument on the Hubble Space Telescope. Three filters were used to sample various wavelength ranges. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are: Blue: 410 nm Green: 502 nm Red: 673 nm
Compass Image Constituent Image for Jupiter/Ganymede Compass and Scale Image
About The Object
Object Name A name or catalog number that astronomers use to identify an astronomical object.
Object Description The type of astronomical object.
R.A. Position Right ascension – analogous to longitude – is one component of an object's position.
Dec. Position Declination – analogous to latitude – is one component of an object's position.
Constellation One of 88 recognized regions of the celestial sphere in which the object appears.
Distance The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs.
Dimensions The physical size of the object or the apparent angle it subtends on the sky.
About The Data
Data Description
  • Proposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
  • Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.
Instrument The science instrument used to produce the data.
Exposure Dates The date(s) that the telescope made its observations and the total exposure time.
Filters The camera filters that were used in the science observations.
About The Image
Image Credit The primary individuals and institutions responsible for the content.
Publication Date The date and time the release content became public.
Color Info A brief description of the methods used to convert telescope data into the color image being presented.
Orientation The rotation of the image on the sky with respect to the north pole of the celestial sphere.

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