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HD 24778


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Speckle Observations of Binary Stars with the WIYN Telescope. III. A Partial Survey of A, F, and G Dwarfs
Two hundred thirty nearby main-sequence stars with spectral types in therange of A to G have been observed by way of speckle interferometryusing the WIYN 3.5 m telescope at Kitt Peak, Arizona. The stars had noprevious mention of duplicity in the literature. Of those observed, 14showed clear evidence of a companion, and 63 were classified assuspected nonsingle based on a power spectrum analysis. The remainingstars discussed show no evidence of duplicity to the limit of thedetection system in high-quality observations. The WIYN Observatory is ajoint facility of the University of Wisconsin-Madison, IndianaUniversity, Yale University, and the National Optical AstronomyObservatory.

Photoelectric observations of lunar occultations. XV
The last (or possibly penultimate) paper in a series on lunaroccultations presents observations of 404 phenomena, preceded by somegeneral remarks of a retrospective nature. The series of observationsbegan in 1968. Data for 20 doubles or suspected doubles are presented,ranked in order of certainty, with designation 3 representing thesurest. Thirteen of the cases refer to stars not previously noted asdoubles. Seven determinations of angular diameters are presented, ofwhich three have been previously observed.

The Einstein shift at the eclipse of May 20, 1947, in Brazil.
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Datos observacionales y astrométricos

Constelación:Tauro
Ascensión Recta:03h57m01.38s
Declinación:+18°50'19.7"
Magnitud Aparente:8.483
Movimiento Propio en Ascensión Recta:-31.9
Movimiento Propio en Declinación:-52.3
B-T magnitude:9.062
V-T magnitude:8.531

Catálogos y designaciones:
Nombres Propios   (Edit)
HD 1989HD 24778
TYCHO-2 2000TYC 1257-562-1
USNO-A2.0USNO-A2 1050-01082877

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