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HD 107013


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CA II H and K measurements made at Mount Wilson Observatory, 1966-1983
Summaries are presented of the photoelectric measurements of stellar CaII H and K line intensity made at Mount Wilson Observatory during theyears 1966-1983. These results are derived from 65,263 individualobservations of 1296 stars. For each star, for each observing season,the maximum, minimum, mean, and variation of the instrumental H and Kindex 'S' are given, as well as a measurement of the accuracy ofobservation. A total of 3110 seasonal summaries are reported. Factorswhich affect the ability to detect stellar activity variations andaccurately measure their amplitudes, such as the accuracy of the H and Kmeasurements and scattered light contamination, are discussed. Relationsare given which facilitate intercomparison of 'S' values with residualintensities derived from ordinary spectrophotometry, and for convertingmeasurements to absolute fluxes.

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Observation and Astrometry data

Constellation:Musca
Right ascension:12h18m42.59s
Declination:-71°52'59.1"
Apparent magnitude:7.972
Distance:92.678 parsecs
Proper motion RA:-106
Proper motion Dec:20.4
B-T magnitude:9.299
V-T magnitude:8.082

Catalogs and designations:
Proper Names
HD 1989HD 107013
TYCHO-2 2000TYC 9235-1632-1
USNO-A2.0USNO-A2 0150-09832721
HIPHIP 60035

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