Stellar and Solar Positions in 1701-1703 Observed by Francesco Bianchini at the Clementine Meridian Line in the Basilica of Santa Maria degli Angeli in Rome, and its Calibration Curve

Details Stellar and Solar Positions in 1701-1703 Observed by Francesco Bianchini at the Clementine Meridian Line in the Basilica of Santa Maria degli Angeli in Rome, and its Calibration Curve Stellar and Solar Positions in 1701-1703 Observed by Francesco Bianchini at the Clementine Meridian Line in the Basilica of Santa Maria degli Angeli in Rome, and its Calibration Curve

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mgm..conf.2470s&link_type=abstract

"THE ELEVENTH MARCEL GROSSMANN MEETING On Recent Developments in Theoretical and Experimental General Relativity, Gravitation an

Astronomy and Astrophysics

Astronomy

History Of Astronomy, Astrometry, Meridian Transits, Ephemerides

Scientific paper

Stellar aberration is the largest special relativistic effect discovered in astronomy (in 1727 by James Bradley), involving the speed of light when composed with Earth orbital motion. This effect with nutation affected the measurement of latitude with Polaris uppper and lower transits in the first week of January, 1701 made by Francesco Bianchini (1662-1729). Equinoxes and Solstices of 1703 were measured by timing solar and stellar transits at the Meridian Line of Pope Clement XI built in the Basilica of S. Maria degli Angeli in Rome. Original Eastward 4' 28.8" ± 0.6" deviation of the Line affects all measurements. The calibration curve of Clementine Line -here firstly published after 2 years of measurements- includes also local deviations of the Line, and it is used to correct solar and lunar ephemerides at 0.3 s level of accuracy, when meridian transits are there observed and timed.

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