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HD 6774


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Lightcurves of 10 Hygiea, 241 Germania and 509 Iolanda
The asteroids 10 Hygiea, 241 Germania and 509 Iolanda have been studiedphotometrically. From their lightcurves, synodic periods of 27.63 +/-0.02, 15.51 +/- 0.01 and 12.72 +/- 0.02 hours, and amplitudes of 0fm 28,0fm 17 and 0fm 45, have been deduced for 10 Hygiea, 241 Germania and 509Iolanda, respectively. The period found for 241 Germania is asignificant revision from one previously published, and we present afirst indication of pole orientation and shape. A synodic period isobtained for 509 Iolanda. The solution obtained for the sense ofrotation, sidereal period, pole orientation and shape properties for 10Hygiea confirms previous results.

Mesures d'etoiles doubles faites a Nice.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1978A&AS...33..275M&db_key=AST

Micrometer Measures of Double Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1959ApJS....4...45V&db_key=AST

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Observation and Astrometry data

Constellation:Poissons
Right ascension:01h08m33.77s
Declination:+15°47'24.8"
Apparent magnitude:8.543
Distance:196.85 parsecs
Proper motion RA:4.2
Proper motion Dec:-25.9
B-T magnitude:9.944
V-T magnitude:8.659

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 6774
TYCHO-2 2000TYC 1196-479-1
USNO-A2.0USNO-A2 1050-00315323
HIPHIP 5362

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