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HD 123602


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SANTIAGO 91, a right ascension catalogue of 3387 stars (equinox J2000).
The positions in right ascension of 3387 stars belonging to the Santiago67 Catalogue, observed with the Repsold Meridian Circle at Cerro Calan,National Astronomical Observatory, during the period 1989 to 1994, aregiven. The average mean square error of a position, for the wholeCatalogue, is +/-0.009 s. The mean epoch of the catalogue is 1991.84.

Spectroscopic and photometric observations of the suspected binary star HD 123058
The results of spectroscopic and photometric observations of the F4 starHD 123058 are reported. The spectroscopic measurements were carried outat the ESO La silla coude spectrograph of the 1.52-m telescope, coveringthe blue spectral range from 3500-5000 A. The broadband UBV photometricobservations were made with an EMI 9502 SA photomultiplier mounted onthe 61-cm telescope. Broad absorption lines were found in the spectrumof HD 123058 which are attributed to a high rotation rate of about 61km/s. When combined with published data, the photometric data areconsistent with a spectral classification of the star. In comparisonwith a model atmosphere grid the photometric data yield an effectivetemperature of 6670 K. The Fe/H abundance ratio is 0.02 which indicatesa probable age of less than 4 x 10 to the 9th yr, while the small valuederived for the color difference suggests that the star lies near thezero-age main sequence. The distance of HD 123058 is estimated to be 70(+ or -8) pc. It is shown on the basis of the observational results thatHD 123058 is not a spectroscopic binary.

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Observation and Astrometry data

Constellation:Zentaur
Right ascension:14h09m20.05s
Declination:-33°56'01.7"
Apparent magnitude:8.744
Distance:1098.901 parsecs
Proper motion RA:9
Proper motion Dec:-7.8
B-T magnitude:10.055
V-T magnitude:8.853

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 123602
TYCHO-2 2000TYC 7289-659-1
USNO-A2.0USNO-A2 0525-17068648
HIPHIP 69149

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