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HD 16883 ()


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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.

Lunar occultation summary. II
Results of a second series of 196 two-color photoelectric lunaroccultation observations made within the interval from May 1972 toDecember 1973 are reported. Each observation has been employed toestimate the minimum magnitude difference between the observed objectand possible undetected companions. The study contains the analyses of143 disappearances and 53 reappearances. Eighteen of these eventsmanifest some degree of multiplicity. Included in the study are 18occultation events for Pleiades members.

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Observation and Astrometry data

Constellation:Bélier
Right ascension:02h43m01.04s
Declination:+20°13'50.1"
Apparent magnitude:7.665
Distance:263.852 parsecs
Proper motion RA:7.3
Proper motion Dec:-12.3
B-T magnitude:9.101
V-T magnitude:7.784

Catalogs and designations:
Proper Names
SUNSHINE   (Edit)
HD 1989HD 16883
TYCHO-2 2000TYC 1229-195-1
USNO-A2.0USNO-A2 1050-00730993
HIPHIP 12688

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