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HD 28980


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Longterm Photometry of Variables at ESO - Part Two - the Second Data Catalogue 1986-1990
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1993A&AS..102...79S&db_key=AST

Long-term photometry of variables at ESO. I - The first data catalogue (1982-1986)
This paper presents the catalog of photometric data in the Stromgrensystem obtained during the first four years (October 1982 - September1986) of the Long-Term Photometry of Variables (LTPV) program at ESO.The data are available in computer-readable form.

Photometric variations of 46 Eridani and 210 G. Eridani
The photometric behavior in the uvby system of the Ap star 46 Eri isanalyzed on the basis of new data. The revised period is P = 3.798777 +or - 0.000015 d. Knowledge of the accurate light-curve of 46 Eri makesit possible to refine data on the multiperiodic B5III variable star 210G. Eri, which was used as a comparison for 46 Eri. Four periods, all ofthe order of four days, are found with P(1) = 3.9215 d standing outclearly. This value is very large compared to those of other mid-Bvariables.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Irmak
Sað Açýklýk:04h33m38.48s
Yükselim:-08°15'20.4"
Görünürdeki Parlaklýk:6.617
Uzaklýk:172.117 parsek
özdevim Sað Açýklýk:-9.4
özdevim Yükselim:-6.4
B-T magnitude:6.546
V-T magnitude:6.612

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 28980
TYCHO-2 2000TYC 5314-3038-1
USNO-A2.0USNO-A2 0750-01030834
HIPHIP 21258
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