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News Release Archive:

News Release 463 of 949

January 22, 2004 09:00 AM (EST)

News Release Number: STScI-2004-05

The Colorful Lives of the Outer Planets

Technical facts about this news release:

About the Object
Object Name: Uranus; Neptune
Object Description: Planets
Distance: The semi-major axis of Uranus's orbit about the sun is 19.18 Astronomical Units (A.U.) or roughly 2.9 billion km. The semi-major axis of Neptune's orbit about the Sun is 30.06 Astronomical Units (A.U.) or roughly 4.5 billion km.
Dimensions: Uranus (without rings) has a diameter of roughly 32,000 miles (51,000 km) at the equator.Neptune has a diameter of roughly 30,800 miles (49,600 km) at the equator.
About the Data
Object: Uranus Uranus Neptune
Instrument: ACS/HRC STIS/CCD STIS/CCD
HST Programs: 9725: E. Karkoschka and M. Tomasko (U. AZ) 9035: E. Karkoschka (U. AZ), M. Lemmon (Texas A&M), M. Tomasko (U. AZ) 9330: E. Karkoschka (U. AZ), M. Lemmon (Texas A&M), M. Tomasko (U. AZ)
Exposure Date(s): August 30, 2003 August 19, 2002 August 3, 2003
Filters: F435W, F550M, F658N, F660N, F775W, F814W, F850LP, and F892N G430L and G750L G430L, G750L, CLEAR, and F28X50LP
Note: Uranus images within this press release were taken with ACS/HRC. They were color calibrated using STIS/CCD data of Uranus. Neptune images within this press release were taken with STIS/CCD.
About the Image
Image Credit: NASA and E. Karkoschka (University of Arizona)
Release Date: January 22, 2004
Orientation: Rings and Moons Circling Uranus
Neptune as Seen with Color Filters