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HD 7997

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Photoelectric Minima of Some Eclipsing Binary Stars We present 29 minima observations of 11 eclipsing binaries.
UBV Photoelectric Observations of UV Piscium Not Available
The 1986 Light Curves of UV Piscium Not Available
Light and colour curve observations and analysis of the short period eclipsing binary system UV PSC In the present work B and V light curves and the (B-V)-color curve ofthe short period (RS CVn type) binary system UV Psc are presented andanalyzed, and absolute information from the available data are derived.Chi-squared minimization procedures were utilized to a large extent infitting light and color curves. The solutions show the binary to be at adistance of about 90 pc with two detached components which are close tothe main sequence (G2 and K0). The inclination of the orbit is close to90 deg. Photometric irregularities present in the light curve arebriefly considered in relation to current ideas on RS CVn systems, andthe color information indicates that a locally hotter (rather thancooler) region is responsible for the irregularities.
Observations of UV Psc and XY Cet Not Available
UV Psc - a Short Period RS CVn Star Not Available

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Osservazione e dati astrometrici

Costellazione:	Pesci
Ascensione retta:	01^h19^m32.93^s
Declinazione:	+07Â°29'26.7"
Magnitudine apparente:	8.435
Distanza:	408.163 parsec
Moto proprio RA:	-7.7
Moto proprio Dec:	-7.6
B-T magnitude:	9.597
V-T magnitude:	8.531

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 7997
TYCHO-2 2000	TYC 26-89-1
USNO-A2.0	USNO-A2 0900-00311280
HIP	HIP 6205

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