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HD 90757


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Identification of moving groups and member selection using HIPPARCOS data
A new method to identify coherent structures in velocity space - movinggroups - in astrometric catalogues is presented: the Spaghetti method.It relies on positions, parallaxes and proper motions, and is ideallysuited to searching for moving groups in the Hipparcos Catalogue. Noradial-velocity information is required. The method has been testedextensively on synthetic data, and applied to the Hipparcos measurementsfor the Hyades and IC 2602 open clusters. The resulting lists of membersagree very well with those of Perryman et al. for the Hyades and thoseof Whiteoak & Braes for IC 2602.

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Observation and Astrometry data

Constellation:Vela
Right ascension:10h27m29.36s
Declination:-53°40'36.1"
Apparent magnitude:8.115
Distance:146.843 parsecs
Proper motion RA:-104.9
Proper motion Dec:64.6
B-T magnitude:9.41
V-T magnitude:8.222

Catalogs and designations:
Proper Names
HD 1989HD 90757
TYCHO-2 2000TYC 8601-3265-1
USNO-A2.0USNO-A2 0300-09683719
HIPHIP 51202

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