Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jsrs.meet..111d&link_type=abstract
"Proceedings of the "Journées Systèmes de Référence Spatio-temporels 2007". Observatoire de Paris, 17-19 September 2007. Editor:
Astronomy and Astrophysics
Astronomy
Scientific paper
About 15 years elapsed since the HIPPARCOS ESA satellite mission observations (the epoch of Hipparcos Catalogue is 1991.25). The errors of the Hipparcos stars proper motions were close to 1 mas/year, and nowadays the error of apparent places of these stars is more than 15 mas. It exceeds the error of Hipparcos stars positions (about 1 mas) by one order of magnitude. Some parts of the sky (presented via Hipparcos stars data) are with bigger errors than mentioned ones, the shortness of the Hipparcos observations yields bigger proper motions errors of double or multiple stars than the single ones, etc. There are numerous astrometric ground based observations of some stars referred to Hipparcos Catalogue. Here, the data of latitude variations of 26 instruments are used to improve the Hipparcos proper motions in declination µδ of observed stars. The method and results are presented here.
No associations
LandOfFree
Better proper motions accuracy for stars with Hipparcos satellite and groundbased observations 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 Better proper motions accuracy for stars with Hipparcos satellite and groundbased observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Better proper motions accuracy for stars with Hipparcos satellite and groundbased observations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1705129