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V1073 Cygni: A New Light Curve and Analysis
A new CCD light curve of the A-type W UMa star V1073 Cygni has beenobtained, and the differential-corrections method of Wilson and Devinneywas used to compute a new set of system parameters. The same analysishas been applied to the other photometric light curves in theliterature, including the Hipparcos light curve. A new ephemeris isdetermined for the times of primary minimum. V1073 Cygni probably hasinitially formed as a detached system and evolved into contact.
| Radial-velocity measurements. III - Ground observations accompanying the HIPPARCOS satellite observation program: Measurements of the radial velocities of 391 stars in 12 fields
The radial velocities of 391 stars, obtained with the Fehrenbachobjective prism associated to the Schmidt telescope of the Observatoirede Haute-Provence are presented. These stars belong to fields speciallychosen for containing several Hipparcos input catalog star members. Eachfield is presented independently. The list includes HD and BDidentifiers when available, 1950 coordinates, spectral type, and B and Vmagnitudes as they appear in the CSI catalog, the radial velocity, theprobable error, the number of independent measurements and commentariessuch as known radial velocity and their origin.
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Группы:
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Наблюдательные данные и астрометрия
| Созвездие: | Лебедь |
| Прямое восхождение: | 21h22m28.46s |
| Склонение: | +33°51'39.8" |
| Видимая звёздная величина: | 8.539 |
| Расстояние: | 1587.302 парсек |
| Собственное движение RA: | -0.6 |
| Собственное движение Dec: | -4.5 |
| B-T magnitude: | 8.68 |
| V-T magnitude: | 8.551 |
Каталоги и обозначения:
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INHABITED SKY
