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HD 120280

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Mesures d'etoiles doubles faites aux lunettes de 74 et 50 CM de l'Observatoire de la Cote d'Azur We give 657 measurements of double stars, Table 1 by R. Gili with CCDcamera, Table 2 by P. Couteau with filar micrometer. Tables 1 and 2 areonly available in electronic form at the CDS via anonymous ftp tocdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html.
Mesures d'etoiles doubles faites a Nice, etoiles doubles nouvelles (24eme serie) decouvertes a Nice. Table 1 gives 1182 measurements of 682 binaries observed with the 74 and50 cm refractors. Table 2 lists 26 new binaries discovered with the 50cm refractor.
Measurements of double stars at Nice with 74-cm and 50-cm refractors A total of 717 measures of 287 binaries made at the 74-cm and 50-cmrefractors are presented. These are mostly very close binariesdiscovered recently, for which a rapid orbital motion is evident forabout 30 percent.
Measurements of binary stars made at Nice Results are presented for 753 measurements of 267 binary stars that weremade with the 50- and 74-cm refractors at Nice Observatory. Coordinatesfor the equinox of 1950 are provided, along with apparent magnitudes,spectral types, and probable periods. It is noted that three-quarters ofthese systems are recently discovered close binaries.
Measurements of double stars made at Nice Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1975A&AS...20..391C&db_key=AST
Mesures d'étoiles doubles faites à Nice Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972A&AS....6..185C&db_key=AST
Étoiles doubles nouvelles (5^éme série) découvertes à Nice avec la lunette de 50 CM Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970A&AS....1..419C&db_key=AST

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Osservazione e dati astrometrici

Costellazione:	Boote
Ascensione retta:	13^h48^m09.20^s
Declinazione:	+22Â°48'06.0"
Magnitudine apparente:	9.452
Moto proprio RA:	-8.3
Moto proprio Dec:	-1.9
B-T magnitude:	10.129
V-T magnitude:	9.508

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 120280
TYCHO-2 2000	TYC 1999-276-1
USNO-A2.0	USNO-A2 1125-06806129
HIP	HIP 67342

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