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HD 9653


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Photometric Study of RX Cephei
Photoelectric observations of RX Cephei from Zsoldas and McAdam (1993)and the authors, and long term visual observations from Schmude and theAAVSO were analyzed. RX Cep, whose variability has been questioned,appears to have become 0.15 magnitude brighter between 1990 and 2000.There is also some evidence of a 350-day period. The B-V color index ofthis star may also be calculated as 1.12+/-0.04.

Is RX Cep a Variable Star?
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Visual polarization measurements in the Cepheus flare
We present polarization measurements on a stellar sample located in alarge area in Cepheus. The observations were made with the 2-m telescopeat the Pic du Midi (France), around 4350 A and with an accuracy of thepolarization degree of the order of 0.0001. At large scales, we findthat the galactic magnetic field as given by the direction of thepolarization (alignment of the dust) is, roughly speaking, parallel tothe galactic plane in the Cassiopeia cloud, with a scale size of theorder of 100 pc, while it is turned by about 90 in the Cepheus cloud. Atsmall scales, in both the Cepheus and the Cassiopeia clouds, the COcontent has little correlation with the degree of polarization.

A. de Sitter's photographic polar photometry revisited; some remarks on photographic photometry with objective gratings
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Photographic magnitudes of stars brighter than 7m.75 between +75° and +80° declination (Errata: 11 270)
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Yerkes actinometry. Zone +73deg to +90deg.
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Observation and Astrometry data

Constellation:Κηφεύς
Right ascension:01h40m31.63s
Declination:+81°25'47.4"
Apparent magnitude:7.131
Distance:299.401 parsecs
Proper motion RA:-8.5
Proper motion Dec:-1.2
B-T magnitude:7.11
V-T magnitude:7.13

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 9653
TYCHO-2 2000TYC 4506-888-1
USNO-A2.0USNO-A2 1650-00352351
HIPHIP 7813

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