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HD 13904

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The Equatorial Coordinates of Components of Triple Stars from the Astrometric Satellite HIPPARCOS Input Catalogue - Part Two - the Results of Statistical Study of Data from Aitken's Catalogue of Double Stars / ADS Not Available
Common proper motion stars in the AGK 3 A search was made of common-proper-motion (CPM) systems among AGK 3stars. The selection of physical systems was based upon the ratiobetween the angular separation (rho) and the proper motion (mu); the CPMstars found are presented in two tables. Table I lists systems withrho/mu less than 1000 years. It contains 326 entries, and the proportionof optical pairs is estimated to be 1 percent. Table II lists systemswith rho/mu in the range 1000 to 3500 years; it contains 113 systems,but only 60 percent of them are physical. Nevertheless, these systemsoften have separations larger than 10,000 AU and are the mostinteresting for the study of the tail of the distribution function ofthe semimajor axes.
List of errors found in the Henry Draper Catalogue Not Available

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Osservazione e dati astrometrici

Costellazione:	Ariete
Ascensione retta:	02^h15^m42.29^s
Declinazione:	+10Â°46'15.7"
Magnitudine apparente:	9.485
Moto proprio RA:	59.1
Moto proprio Dec:	-63.8
B-T magnitude:	10.174
V-T magnitude:	9.542

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 13904
TYCHO-2 2000	TYC 634-1230-1
USNO-A2.0	USNO-A2 0975-00504408
HIP	HIP 10533

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