News Release Archive:

News Release 122 of 250

January 9, 2006 09:20 AM (EST)

News Release Number: STScI-2006-02

There's More to the North Star Than Meets the Eye

Technical facts about this news release:

About the Object
Object Name: Polaris, Alpha Ursae Minoris, North Star
Object Description: Triple Star System
Position (J2000): R.A. 02h 31m 49s.08
Dec. +89° 15' 50".8
Constellation: Ursa Minor
Distance: The distance to the star system is 430 light-years or 132 parsecs.
Dimensions: Polaris (star Aa) and star Ab are on average18.5 Astronomical Units from each other. Polaris (star Aa) and star B are on average 2,400 Astronomical Units from each other.
About the Data
Data Description: The Hubble image was created from HST data from proposal 10593: N.R. Evans (Harvard Smithsonian/CfA), H.E. Bond (STScI), G. Bono (INAF, Osservatorio Astronomico di Roma), M. Karovska (Harvard Smithsonian/CfA), E. Nelan (STScI), D.D. Sasselov (Harvard University), and G. Schaefer (STScI).
Instrument: ACS/HRC
Exposure Date(s): August 2/3, 2005
Filters: F220W (Near UV)
About the Image
Image Credit: NASA, ESA, N. Evans (Harvard Smithsonian/CfA), and H. Bond (STScI)
Release Date: January 9, 2006
Orientation: Polaris A and Polaris B