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HD 207731


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Nice Observatory CCD measurements of visual double stars (4th series)
We present 176 measurements of 167 visual double stars, made in 2000 and2001 with the 50 cm refractor of the Nice Observatory and attached CCDcamera, using an algorithm based on the adjustment of a tridimensionalmathematical surface (Table 1). Position angle, angular separation andmagnitude difference are given. 33 new binaries (HDS and TDS) discoveredby Hipparcos were measured. Table 1 is only available in electronic format the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) orvia http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/396/933

GPM - compiled catalogue of absolute proper motions of stars in selected areas of sky with galaxies.
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A preliminary compilation of DS-programme star positions
A catalog is presented of the double-star-program (DS-program) starpositions, listing right ascensions for 930 DSs and declinations for1225 DSs of the program. The positions were compiled from the observedvalues obtained between 1980 and 1987 with the meridian circles of sixUSSR observatories (the Moscow, Kazan', Kiev, Khar'kov, Odessa, andTashkent Observatories) and the Belgrade Observatory. The measurementsand the treatment of the observational material were performed using therelative method, and the FK-4 system stars were used as reference stars.

Binary star measurements made at Nice with the 50-cm reflector
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1989A&AS...77..125L&db_key=AST

Mesures d'etoiles doubles faites a Nice.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1978A&AS...33..275M&db_key=AST

Relative motions of 17 visual double stars
The relative motions of 17 visual stars are studied; the data cited indeveloping the equations of relative motion are often from observationsmade 50 or more years ago. The results are compared with the data fromSAO, IDS and AGK catalogs.

Micrometer Measures of Double Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1961ApJS....6....1K&db_key=AST

Mesures d'étoiles doubles faites au réfracteur de 38 cm de l'Observatoire de Nice
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Observation and Astrometry data

Constellation:Pégase
Right ascension:21h50m37.14s
Declination:+22°15'31.1"
Apparent magnitude:8.398
Proper motion RA:22.4
Proper motion Dec:-9.9
B-T magnitude:10.064
V-T magnitude:8.536

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 207731
TYCHO-2 2000TYC 1678-1108-1
USNO-A2.0USNO-A2 1050-19932266

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