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HD 176610


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New periodic variables from the Hipparcos epoch photometry
Two selection statistics are used to extract new candidate periodicvariables from the epoch photometry of the Hipparcos catalogue. Theprimary selection criterion is a signal-to-noise ratio. The dependenceof this statistic on the number of observations is calibrated usingabout 30000 randomly permuted Hipparcos data sets. A significance levelof 0.1 per cent is used to extract a first batch of candidate variables.The second criterion requires that the optimal frequency be unaffectedif the data are de-trended by low-order polynomials. We find 2675 newcandidate periodic variables, of which the majority (2082) are from theHipparcos`unsolved' variables. Potential problems with theinterpretation of the data (e.g. aliasing) are discussed.

Lunar occultation summary. II
Results of a second series of 196 two-color photoelectric lunaroccultation observations made within the interval from May 1972 toDecember 1973 are reported. Each observation has been employed toestimate the minimum magnitude difference between the observed objectand possible undetected companions. The study contains the analyses of143 disappearances and 53 reappearances. Eighteen of these eventsmanifest some degree of multiplicity. Included in the study are 18occultation events for Pleiades members.

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Observation and Astrometry data

Constellation:いて座
Right ascension:19h01m59.50s
Declination:-22°05'35.8"
Apparent magnitude:8.752
Distance:245.098 parsecs
Proper motion RA:1.3
Proper motion Dec:-8.3
B-T magnitude:9.048
V-T magnitude:8.777

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 176610
TYCHO-2 2000TYC 6294-1517-1
USNO-A2.0USNO-A2 0675-31165185
HIPHIP 93456

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