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HD 91814


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Speckle Interferometry at the US Naval Observatory. VIII.
The results of 2044 speckle interferometric observations of doublestars, made with the 26 inch (66 cm) refractor of the US NavalObservatory, are presented. Each speckle interferometric observation ofa system represents a combination of over a thousand short-exposureimages. These observations are averaged into 1399 mean positions andrange in separation from 0.16" to 14.97", with a mean separation of2.51". This is the eighth in a series of papers presenting measuresobtained with this system and covers the period 2001 March 18 through2001 December 30.

Two-colour photometry for 9473 components of close Hipparcos double and multiple stars
Using observations obtained with the Tycho instrument of the ESAHipparcos satellite, a two-colour photometry is produced for componentsof more than 7 000 Hipparcos double and multiple stars with angularseparations 0.1 to 2.5 arcsec. We publish 9473 components of 5173systems with separations above 0.3 arcsec. The majority of them did nothave Tycho photometry in the Hipparcos catalogue. The magnitudes arederived in the Tycho B_T and V_T passbands, similar to the Johnsonpassbands. Photometrically resolved components of the binaries withstatistically significant trigonometric parallaxes can be put on an HRdiagram, the majority of them for the first time. Based on observationsmade with the ESA Hipparcos satellite.

ICCD speckle observations of binary stars. VIII - Measurements during 1989-1991 from the Cerro Tololo 4 M telescope
One-thousand eighty-eight observations of 947 binary star systems,observed by means of speckle interferometry with the 4 m telescope onCerro Tololo, are presented. These measurements, made during the period1989-1991, comprise the second installment of results stemming from theexpansion of our speckle program to the southern hemisphere.

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

Micrometer Observations of Double Stars and New Pairs - Part Ten
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980ApJS...44..111H&db_key=AST

Mesures d'etoiles doubles faites AU 38cm de l'Observatoire de Paris.
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Measures of double stars.
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Mesures d'étoiles doubles effectuées au réfracteur de 38 cm de l'Observatoires de Nice
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Mesures d'Etoiles Doubles faites au Réfracteur de 38 cm. de l'Observatoire de Nice.
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Dades d'Observació i Astrometria

Constel·lació:Sextans
Ascensió Recta:10h36m09.16s
Declinació:+00°41'09.7"
Magnitud Aparent:8.705
Distancia:167.224 parsecs
Moviment propi RA:-33.7
Moviment propi Dec:36.5
B-T magnitude:9.249
V-T magnitude:8.75

Catàlegs i designacions:
Noms Propis
HD 1989HD 91814
TYCHO-2 2000TYC 253-714-1
USNO-A2.0USNO-A2 0900-06728764
HIPHIP 51895

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