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HD 68874


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Pulkovo compilation of radial velocities for 35495 stars in a common system.
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SB9: The ninth catalogue of spectroscopic binary orbits
The Ninth Catalogue of Spectroscopic Binary Orbits(http://sb9.astro.ulb.ac.be) continues the series of compilations ofspectroscopic orbits carried out over the past 35 years by Batten andcollaborators. As of 2004 May 1st, the new Catalogue holds orbits for2386 systems. Some essential differences between this catalogue and itspredecessors are outlined and three straightforward applications arepresented: (1) completeness assessment: period distribution of SB1s andSB2s; (2) shortest periods across the H-R diagram; (3)period-eccentricity relation.

Reprocessing the Hipparcos Intermediate Astrometric Data of spectroscopic binaries. II. Systems with a giant component
By reanalyzing the Hipparcos Intermediate Astrometric Data of a largesample of spectroscopic binaries containing a giant, we obtain a sampleof 29 systems fulfilling a carefully derived set of constraints andhence for which we can derive an accurate orbital solution. Of these,one is a double-lined spectroscopic binary and six were not listed inthe DMSA/O section of the catalogue. Using our solutions, we derive themasses of the components in these systems and statistically analyzethem. We also briefly discuss each system individually.Based on observations from the Hipparcos astrometric satellite operatedby the European Space Agency (ESA 1997) and on data collected with theSimbad database.

Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
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Statistical Analysis of a Sample of Spectroscopic Binaries Containing Late Type Giants
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UBV photometry of stars whose positions are accurately known. VI
Results are presented from UBV photometric observations of 1000 stars ofthe Bright Star Catalogue and the faint extension of the FK5.Observations were carried out between July 1987 and December 1990 withthe 40-cm Cassegrain telescope of the Kvistaberg Observatory.

Fifth fundamental catalogue. Part 2: The FK5 extension - new fundamental stars
The mean positions and proper motions for 3117 new fundamental starsessentially in the magnitude range about 4.5 to 9.5 are given in thisFK5 extension. Mean apparent visual magnitude is 7.2 and is on average2.5 magnitudes fainter then the basic FK5 which has a mean magnitude of4.7. (The basic FK5 gives the mean positions and proper motions for theclassical 1535 fundamental stars). The following are discussed: theobservational material, reduction of observations, star selection, andthe system for the FK5 extension. An explanation and description of thecatalog are given. The catalog of 3117 fundamental stars for the equinoxand epoch J2000.0 and B1950.0 is presented. The parallaxes and radialvelocities for 22 extension stars with large forecasting effects aregiven. Catalogs used in the compilation of the FK5 fundamental catalogare listed.

Photoelectric radial velocities, Paper XIII - 406 ninth-magnitude K0 stars in the Clube Selected Areas
Radial velocities are given for 406 ninth-magnitude late-type stars. Thestars are grouped in 10 small regions located on a systematic plan atGalactic latitudes of + or - 35 deg. Each star has been observed atleast twice, and the mean velocities are accurate to about less than 1km/s. Thirty spectroscopic binaries have been discovered; orbits havealready been given for 13 of them, and observations of the others arecontinuing.

Photoelectric radial velocities. XII - The orbits of another four spectroscopic binaries in the Clube Selected Areas
Orbits are presented for four more ninth-magnitude stars of HD type K0.HD 65195, a system containing a giant star, has the unusually shortperiod of 38 days, HD 68874 has a remarkably large mass function; but nosecondary star is seen in the radial-velocity traces or in aclassification-dispersion spectrogram, although some abnormality existsin the object's narrow-band photometric properties. A possibleresolution of the difficulty is that the secondary may itself be a closebinary, so HD 68874 may be a system analogous to HR 6497 and dSerpentis.

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Osservazione e dati astrometrici

Costellazione:Lince
Ascensione retta:08h15m48.61s
Declinazione:+35°56'21.5"
Magnitudine apparente:8.845
Distanza:232.019 parsec
Moto proprio RA:-8.5
Moto proprio Dec:-2.7
B-T magnitude:9.952
V-T magnitude:8.937

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 68874
TYCHO-2 2000TYC 2482-1438-1
USNO-A2.0USNO-A2 1200-05990403
HIPHIP 40470

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