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HD 210119


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Apsidal motion in eccentric eclipsing binaries: V871 Aql, V345 Lac, V401 Lac and CR Sct
About thirty new times of minimum light recorded with photoelectric orCCD photometers were obtained for several little studied eccentric-orbiteclipsing binaries V871 Aql (P=3.0°, e=0.13), V345 Lac ( 7.5°,0.46), V401 Lac ( 2.0°, 0.16) and CR Sct ( 4.2°, 0.09). TheirO-C diagrams were analyzed using all reliable timings found in theliterature and in all cases an apsidal motion was either discovered orconfirmed. The new values for the elements of the apsidal motion werederived. We find periods of apsidal motion of about 255, 7000, 79.4 and4400 years for V871 Aql, V345 Lac, V401 Lac and CR Sct, respectively.Partly based on photoelectric observations secured at the HvarObservatory, Zagreb University, Croatia.

New Times of Minima of Eclipsing Binary Systems
We present several photoelectric minima observations of 7 eclipsingbinaries.

The First Ground-Based Photometric Observations of V401 Lacertae
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Observation and Astrometry data

Constellation:とかげ座
Right ascension:22h06m53.00s
Declination:+49°16'02.3"
Apparent magnitude:8.309
Distance:467.29 parsecs
Proper motion RA:-7.5
Proper motion Dec:-18.2
B-T magnitude:8.421
V-T magnitude:8.319

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 210119
TYCHO-2 2000TYC 3613-821-1
USNO-A2.0USNO-A2 1350-15833665
HIPHIP 109171

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