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HD 30065


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CCD Speckle Observations of Binary Stars from the Southern Hemisphere. IV. Measures during 2001
We present 549 observations of 181 primarily southern binary stars. Ofthese, 32 are high-quality nondetections, meaning that, if binary, thesystem had a separation below the diffraction limit at the time of theobservation, and relative astrometry is presented for the remaining 517observations. In addition, a magnitude difference measure is reported in312 cases in which the observation was judged to be of sufficientquality to have little decorrelation of the speckle pattern of thesecondary relative to the primary star. These data were obtained fromspeckle observations taken at the Lowell-Tololo 0.6 m telescope at CerroTololo Inter-American Observatory using a fast-readout CCD detectorduring 2001 November. Results from an astrometric measurement precisionstudy indicate that the measures have typical uncertainties of12.2+/-1.4 mas in separation and 1.28d+/-0.21d in position angle withlittle systematic error. The magnitude differences presented show goodagreement with values in the Hipparcos catalog where comparisons can bemade. Their uncertainties are also characterized; they show a typicalvalue of 0.18 mag per 2 minute observation. Four systems of particularinterest are discussed.

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观测天体数据

星座:繪架座
右阿森松:04h41m51.78s
赤纬:-47°49'33.8"
视星:7.465
距离:89.928 天文距离
右阿森松适当运动:-23.9
赤纬适当运动:-39.2
B-T magnitude:7.792
V-T magnitude:7.492

目录:
适当名称   (Edit)
HD 1989HD 30065
TYCHO-2 2000TYC 8079-389-1
USNO-A2.0USNO-A2 0375-01601070
HIPHIP 21849

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