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HD 99949


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A preliminary compilation of DS-programme star positions
A catalog is presented of the double-star-program (DS-program) starpositions, listing right ascensions for 930 DSs and declinations for1225 DSs of the program. The positions were compiled from the observedvalues obtained between 1980 and 1987 with the meridian circles of sixUSSR observatories (the Moscow, Kazan', Kiev, Khar'kov, Odessa, andTashkent Observatories) and the Belgrade Observatory. The measurementsand the treatment of the observational material were performed using therelative method, and the FK-4 system stars were used as reference stars.

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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观测天体数据

星座:獅子座
右阿森松:11h29m58.80s
赤纬:+03°12'18.2"
视星:8.334
距离:84.962 天文距离
右阿森松适当运动:-52.3
赤纬适当运动:-61.1
B-T magnitude:8.894
V-T magnitude:8.381

目录:
适当名称
HD 1989HD 99949
TYCHO-2 2000TYC 267-674-1
USNO-A2.0USNO-A2 0900-06941572
HIPHIP 56102

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