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HD 9476


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Detection of moving clusters by a method of cinematic pairs
The algorithm of revealing of pairs stars with common movement isoffered and is realized. The basic source is the catalogue HIPPARCOS. Onconcentration of kinematic pairs it is revealed three unknown earliermoving clusters in constellations: 1) Phe, 2) Cae, 3) Hor and, wellknown, in 4) UMa are revealed. On an original technique the members ofclusters -- all 87 stars are allocated. Coordinates of the clustersconvergent point α, delta; (in degrees), spatial speed (in km/s)and age (in 106 yr) from isochrone fitting have made: 1) 51,-29, 19.0, 500, 5/6; 2) 104, -32, 23.7, 300, 9/12; 3) 119, -27, 22.3,100, 9/22; 4) 303, -31, 16.7, 500, 16/8 accordingly. Numerator offraction -- number of stars identified as the members of clusters,denominator -- number of the probable members (with unknown radialspeeds). The preliminary qualitative analysis of clusters spatialstructure is carried in view of their dynamic evolution.

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Osservazione e dati astrometrici

Costellazione:Scultore
Ascensione retta:01h32m24.58s
Declinazione:-37°17'04.4"
Magnitudine apparente:9.038
Moto proprio RA:32.6
Moto proprio Dec:9.2
B-T magnitude:9.752
V-T magnitude:9.097

Cataloghi e designazioni:
Nomi esatti
HD 1989HD 9476
TYCHO-2 2000TYC 7005-289-1
USNO-A2.0USNO-A2 0525-00529040
HIPHIP 7167

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