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HD 5361


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Photoelectric photometry of the RRs variable GP And
Medium-to-high-time-resolution photoelectric observations of the RRsvariable GP And are discussed. It is found that the fundamentalpulsation with period P1 0.07868270d is superposed by the followingtypes of disturbances: (1) variability of the mean brightness (no perioddetected); (2) variability of amplitude (possible period P2 0.64d); (3)superposition of an 18-minute wave (possibly only near minimum and withphase fluctuations); and (4) variability of the shape of the light curvein individual cycles.

Orbital elements and dimensions of the eclipsing binary AI Phe
Spectroscopic observations of the 9th magnitude eclipsing binary AI Pheare reported and discussed in conjunction with the recent photometricdata by Reipurth (1978). The spectroscopic orbital elements have beendetermined from 18 double-lined spectra as following: V0equals -5.95 km/s, Kp equals 49.9 km/s, Ks equals47.8 km/s, e equals 0.19. The spectral types of components are estimatedto be G2V and G5V. The primary and secondary components of AI Phe arefound to have masses of 1.1 and 1.15 solar mass, and radii 1.7 and 2.1solar radii, respectively.

Colors, luminosities, and motions of the nearer G-type stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1964AJ.....69..570E&db_key=AST

Spectral and Luminosity Classifications and Measurements of the Strength of Cyanogen Absorption for Late-Type Stars from Objective-Prism Spectra.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1961ApJ...134..809Y&db_key=AST

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Dades d'Observació i Astrometria

Constel·lació:Andromeda
Ascensió Recta:00h55m41.78s
Declinació:+23°09'22.2"
Magnitud Aparent:8.037
Distancia:217.391 parsecs
Moviment propi RA:-1
Moviment propi Dec:3.8
B-T magnitude:9.384
V-T magnitude:8.149

Catàlegs i designacions:
Noms Propis
HD 1989HD 5361
TYCHO-2 2000TYC 1739-2137-1
USNO-A2.0USNO-A2 1125-00327180
HIPHIP 4344
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