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HD 67921

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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.
Large and kinematically unbiased samples of G- and K-type stars. IV - Evolved stars of the old disk population Modified Stromgren and (R,I) photometry, along with DDO and Genevaphotometry, are presented for a complete sample of evolved old-disk Gand K giants in the Bright Star Catalogue. Stars with ages of between1.5 x 10 to the 9th and 10 to the 10th yr are found to have anear-normal distribution of heavy element abundances, centered on anFe/H abundance ratio of -0.1 dex. The old disk clusters NGC 3680 and IC4651 contain red-straggler young-disk giants that are probablycontemporaries of the blue stragglers in the clusters.
Large and kinematically unbiased samples of G- and K-type stars. II - Observations of evolved stars in the Bright Star sample. III - Evolved young disk stars in the Bright Star sample Four color and RI observations were obtained for a large sample ofG-type and K-type stars in the Bright Star Catalogue. Data are firstpresented for 110 evolved stars. Photometry of evolved young diskpopulation stars have then been calibrated for luminosity, reddening,and metallicity on the basis of results for members of the Hyades andSirius superclusters. New DDO results are given for 120 stars.
E. W. Fick Observatory stellar radial velocity measurements. I - 1976-1984 Stellar radial velocity observations made with the large vacuumhigh-dispersion photoelectric radial velocity spectrometer at FickObservatory are reported. This includes nearly 2000 late-type starsobserved during 585 nights. Gradual modifications to this instrumentover its first eight years of operation have reduced the observationalerror for high-quality dip observations to + or - 0.8 km/s.
Radial velocities of southern stars obtained with the photoelectric scanner CORAVEL. III - 790 late-type bright stars Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1985A&AS...59...15A&db_key=AST
The Bibliographical Star Index Not Available
Intermediate-band photometry of RR LYR variables. I. Definition and characteristics of the system. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971MNRAS.154...79J&db_key=AST
Narrow-Band and Broad-Band Photometry of Red Stars. III. Southern Giants Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970ApJ...161..199E&db_key=AST

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Osservazione e dati astrometrici

Costellazione:	Poppa
Ascensione retta:	08^h09^m06.70^s
Declinazione:	-30Â°19'21.0"
Magnitudine apparente:	6.65
Distanza:	210.526 parsec
Moto proprio RA:	15
Moto proprio Dec:	-17.4
B-T magnitude:	8.5
V-T magnitude:	6.816

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 67921
TYCHO-2 2000	TYC 7121-1864-1
USNO-A2.0	USNO-A2 0525-07549723
BSC 1991	HR 3196
HIP	HIP 39914

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