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New Orbital Elements for 5 Double Stars
In this paper are presented recalculated elliptical and Thiel-Innesorbitatal elements for the following double stars: WDS05255-0033,WDS12272+2701, WDS 13336+2944 and WDS 21031+0132 (two versions). Theelements of the pair WDS 06074+2640 = McA 25 are calculated for thefirst time.

Radial velocities. Measurements of 2800 B2-F5 stars for HIPPARCOS
Radial velocities have been determined for a sample of 2930 B2-F5 stars,95% observed by the Hipparcos satellite in the north hemisphere and 80%without reliable radial velocity up to now. Observations were obtainedat the Observatoire de Haute Provence with a dispersion of 80Ä,mm(-1) with the aim of studying stellar and galactic dynamics.Radial velocities have been measured by correlation with templates ofthe same spectral class. The mean obtained precision is 3.0 km s(-1)with three observations. A new MK spectral classification is estimatedfor all stars. Based on observations made at the Haute ProvenceObservatory, France and on data from The Hipparcos Catalogue, ESA.Tables 4, 5 and 6 are only available in electronic form at the CDS viaanonymous ftp to cdsarc.u-strasbg.fr or viahttp://cdsweb.u-strasbg.fr/Abstract.htm

ICCD Speckle Observations of Binary Stars. XVII. Measurements During 1993-1995 From the Mount Wilson 2.5-M Telescope.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1997AJ....114.1639H&db_key=AST

All-sky Stromgren photometry of speckle binary stars
All-sky Stromgren photometric observations were obtained for 303 specklebinaries. Most stars were in the range of V = 5-8. These data, whencombined with ratios of intensities from the CHARA speckle photometryprogram, will allow the determination of photometric indices for theindividual components of binary stars with separations as small as 0.05arcsec. These photometric indices will complement the stellar massesfrom the speckle interferometry observations to provide a much improvedmass-luminosity relationship.

ICCD speckle observations of binary stars. V - Measurements during 1988-1989 from the Kitt Peak and the Cerro Tololo 4 M telescopes
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1990AJ.....99..965M&db_key=AST

ICCD speckle observations of binary stars. IV - Measurements during 1986-1988 from the Kitt Peak 4 M telescope
One thousand five hundred and fifty measurements of 1006 binary starsystems observed mostly during 1986 through mid-1988 by means of speckleinterferometry with the KPNO 4-m telescope are presented. Twenty-onesystems are directly resolved for the first time, including newcomponents to the cool supergiant Alpha Her A and the Pleiades shellstar Pleione. A continuing survey of The Bright Star Catalogue yieldedeight new binaries from 293 bright stars observed. Corrections tospeckle measures from the GSU/CHARA ICCD speckle camera previouslypublished are presented and discussed.

Interferometric Observations of Double Stars in 1985 and 1986
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1988A&AS...72..563T&db_key=AST

ICCD speckle observations of binary stars. II - Measurements during 1982-1985 from the Kitt Peak 4 M telescope
This paper represents the continuation of a systematic program of binarystar speckle interferometry initiated at the 4 m telescope on Kitt Peakin late 1975. Between 1975 and 1981, the observations were obtained witha photographic speckle camera, the data from which were reduced byoptical analog methods. In mid-1982, a new speckle camera employing anintensified charge-coupled device as the detector continued the programand necessitated the development of new digital procedures for reducingand analyzing speckle data. The camera and the data-processingtechniques are described herein. This paper presents 2780 newmeasurements of 1012 binary and multiple star systems, including thefirst direct resolution of 64 systems, for the interval 1982 through1985.

Interferometric observations of double stars in 1983 and 1984
Position angles and separations of visual binary stars have beenmeasured with a photoelectric phase-grating interferometer on the 1-mreflector on Mt. Sanglok. The observational technique is brieflydescribed. The 134 measurements of 123 pairs with rho of between 0.05and 0.07 arcsec and the residuals from the ephemerides are given. HR 813= Mu Cet has been resolved interferometrically for the first time.

The calibration of interferometrically determined properties of binary stars
With the advent of speckle interferometry, high angular resolution hasbegun to play a routine role in the study of binary stars. Speckle andother interferometric techniques not only bring enhanced resolution tothis classic and fundamental field but provide an equally important gainin observational accuracy. These methods also offer the potential forperforming accurate differential photometry for binary stars of verysmall angular separation. This paper reviews the achievements of moderninterferometric techniques in measuring stellar masses and luminositiesand discusses the special calibration problems encountered in binarystar interferometry. The future possibilities for very high angularresolution studies of close binaries are also described.

Interferometer observations of double stars. III
Position angles and separations rho of 98 binaries were measured in 1982with a photoelectric phase-grating interferometer on 60-, 70-, 100-,260-cm reflectors. For the 100-cm, the rms error in both coordinates isabout 0.007 arcsec. Eight stars remain unresolved.

Speckle interferometric measurements of binary stars. VI
Three hundred and fifty-four measurements of 169 binary stars observedby means of speckle interferometry with the 2.1 m telescope at KPNO arepresented. Measured separations range from 0.066 to 4.09 arcsec. Thepreviously unknown binary HD 46100 is resolved for the first time.

Observation of Occultations at Skalnaté Pleso Observatory During the Years 1950-1953
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Observation and Astrometry data

Constellation:Zwillinge
Right ascension:06h07m20.02s
Declination:+26°40'55.8"
Apparent magnitude:7.061
Distance:406.504 parsecs
Proper motion RA:-2
Proper motion Dec:-1.7
B-T magnitude:7.005
V-T magnitude:7.057

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 41600
TYCHO-2 2000TYC 1872-1114-1
USNO-A2.0USNO-A2 1125-03409806
HIPHIP 29014

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