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CCD measurements of visual binaries
CCD measurements of visual double stars were obtained with the ESO 1.5 mdanish reflector. All binaries observed are candidates for the HIPPARCOSInput Catalogue. More than 400 observations have been made in four clearnights. The accuracy obtained is comparable to the accuracy of thephotographic technique, but the observing and reduction times are oneorder of magnitude smaller.
| Appulses and occultations of SAO stars by Mercury - 1987-1995
While no readily observable occultations were found in the presentpredictions for 78 close approaches by Mercury to stars in theSmithsonian Astrophysical Observatory catalog (1966) over the periodJanuary 1, 1987-December 31, 1995, seven occultations of stars withvisual magnitudes of 7 or fainter are noted. These events are presentedwith a view to searches for material in the vicinity of Mercury, as wellas investigations requiring close, bright stars for the improvement ofground-based Mercury images.
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Osservazione e dati astrometrici
| Costellazione: | Vergine |
| Ascensione retta: | 12h18m24.04s |
| Declinazione: | -05°01'53.7" |
| Magnitudine apparente: | 8.628 |
| Distanza: | 100.402 parsec |
| Moto proprio RA: | 29.7 |
| Moto proprio Dec: | -143.6 |
| B-T magnitude: | 9.162 |
| V-T magnitude: | 8.673 |
Cataloghi e designazioni:
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