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HD 12649

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ICCD Speckle Observations of Binary Stars. XXIII. Measurements during 1982-1997 from Six Telescopes, with 14 New Orbits We present 2017 observations of 1286 binary stars, observed by means ofspeckle interferometry using six telescopes over a 15 year period from1982 April to 1997 June. These measurements constitute the 23dinstallment in CHARA's speckle program at 2 to 4 m class telescopes andinclude the second major collection of measurements from the MountWilson 100 inch (2.5 m) Hooker Telescope. Orbital elements are alsopresented for 14 systems, seven of which have had no previouslypublished orbital analyses.
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.
Observations of Double Stars. XVIII. Micrometer observations of 1350 pairs in 1995-1997 are listed.
Mesures d'etoiles doubles faites a Nice (5eme serie. Double star measurements made at Nice We present the last observations from two lists: General program and MLRpairs, made with the 50~cm refractor of Nice Observatory.
ICCD speckle observations of binary stars. V - Measurements during 1988-1989 from the Kitt Peak and the Cerro Tololo 4 M telescopes Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1990AJ.....99..965M&db_key=AST
Micrometer Observations of Double Stars and New Pairs - Part Ten Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980ApJS...44..111H&db_key=AST
Micrometer observations of double stars.8. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1975ApJS...29..315H&db_key=AST
Mesures d'étoiles doubles faites à l'équatorial de 38 CM de l'Observatoire de Paris Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972A&AS....6..147B&db_key=AST
Mikrometermessungen von Doppelsternen. VI. Not Available
Mesures d'etoiles doubles faites AU 38cm de l'Observatoire de Paris. Not Available
Mikrometermessungen von Doppelsternen Not Available

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Osservazione e dati astrometrici

Costellazione:	Cassiopea
Ascensione retta:	02^h07^m05.91^s
Declinazione:	+69Â°56'37.8"
Magnitudine apparente:	9.007
Distanza:	112.867 parsec
Moto proprio RA:	79.5
Moto proprio Dec:	-45.9
B-T magnitude:	9.73
V-T magnitude:	9.067

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 12649
TYCHO-2 2000	TYC 4315-1736-1
USNO-A2.0	USNO-A2 1575-01235397
HIP	HIP 9877

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