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HD 19357


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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.

The Tokyo PMC catalog 90-93: Catalog of positions of 6649 stars observed in 1990 through 1993 with Tokyo photoelectric meridian circle
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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.

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Osservazione e dati astrometrici

Costellazione:Perseo
Ascensione retta:03h07m58.71s
Declinazione:+35°56'52.5"
Magnitudine apparente:8.646
Distanza:411.523 parsec
Moto proprio RA:-5.2
Moto proprio Dec:-1.6
B-T magnitude:8.85
V-T magnitude:8.663

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 19357
TYCHO-2 2000TYC 2351-707-1
USNO-A2.0USNO-A2 1200-01396128
HIPHIP 14560

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