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HD 64121


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Estimation of spectral classifications for bright southern stars with interesting Stromgren indices
This paper investigates the degree of success with which uvby photometrycan be applied to predict spectral classifications for 947 A, F, and Gstars brighter than an apparent magnitude of 8.3 and with four-colorindices indicating some kind of interesting, unusual, or peculiarspectrum. One or several possible spectral classifications are estimatedfor each star from photometry alone, double stars are distinguished, andthe estimates are compared with published classifications. The resultsshow that the framework provided by uvby photometry can be extended toinclude most G and K stars, reddened stars, peculiar stars, and certaintypes of double star.

Equivalent widths of the K line
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1956MNRAS.116..277D&db_key=AST

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Observation and Astrometry data

Constellation:Τρόπις
Right ascension:07h49m27.64s
Declination:-54°48'44.2"
Apparent magnitude:7.437
Distance:133.333 parsecs
Proper motion RA:-3.4
Proper motion Dec:-75.3
B-T magnitude:8.543
V-T magnitude:7.529

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 64121
TYCHO-2 2000TYC 8557-887-1
USNO-A2.0USNO-A2 0300-03337196
HIPHIP 38181

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