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TYC 1441-2049-1


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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.

Micrometer observations of double stars and new pairs. XIII
From a program of double star observations which emphasizes orbital,neglected, and newly discovered pairs, results obtained from October1984 to January 1987 are presented. A total of 3030 visual and 550photographic measures are listed. The positions in WDS format andDurchmusterung numbers are shown for 117 pairs for which firstobservations appear in this paper. Magnitudes are estimated for some ofthe objects.

Visual double stars measured at Lick Observatory Mount Hamilton, California.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1979PASP...91..479H&db_key=AST

Mesures d'étoiles doubles faites au rĝfraceur de 38 cm de l'Observatoire de Nice
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Mesures d'étoiles doubles effectuées au réfracteur de 38 cm. de l'Observatoire de Nice
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Osservazione e dati astrometrici

Costellazione:Leone
Ascensione retta:11h57m26.52s
Declinazione:+18°22'38.0"
Magnitudine apparente:9.856
Moto proprio RA:51
Moto proprio Dec:-16.8
B-T magnitude:10.429
V-T magnitude:9.904

Cataloghi e designazioni:
Nomi esatti   (Edit)
TYCHO-2 2000TYC 1441-2049-1
USNO-A2.0USNO-A2 1050-06617750
HIPHIP 58309
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