HST Astrometry of the Uranian Inner Satellite System

Details HST Astrometry of the Uranian Inner Satellite System HST Astrometry of the Uranian Inner Satellite System

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...186.1302p&link_type=abstract

American Astronomical Society, 186th AAS Meeting, #13.02; Bulletin of the American Astronomical Society, Vol. 27, p.829

Astronomy and Astrophysics

Astronomy

2

Scientific paper

The ten faint, inner satellites of Uranus have not been observed since their discovery in 1986 with Voyager II. Astrometric observations of these faint satellites with the Hubble Space Telescope were sought in an effort to improve their orbits for a spectroscopic follow-up and to study their dynamical resonances. Thirty three images were taken on 14 August 1994 with WFPC2 in the BVRI filters. As expected, eight of the ten inner satellites were recovered -- only the two faintest and innermost were not detected. In addition, measurable images of Ariel and Miranda were obtained on the same CCD chip. The orbits were well covered, and a range of exposures was used to cover the nine magnitude difference between Ariel (V=14) and Bianca (V=23). Our strategy was to use accurate Miranda/Ariel orbital predictions and measurements to reduce the measurements of the faint satellites. We will discuss in some detail our techniques of measurement and reduction, as well as our results. While measurement precision varied widely depending on signal strength, even rough pixel measurements have a precision of 0.04 arcsec in the Planetary Camera. In addition to astrometry of the faint satellites, the four color images were used to determine magnitudes and color indexes for the brighter ones, relative to ground-based photometry of Ariel.

Affiliated with

Also associated with

No associations

Rating

HST Astrometry of the Uranian Inner Satellite System does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with HST Astrometry of the Uranian Inner Satellite System, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HST Astrometry of the Uranian Inner Satellite System will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1057243