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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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Osservazione e dati astrometrici

Costellazione:	Eridano
Ascensione retta:	04^h33^m38.48^s
Declinazione:	-08Â°15'20.4"
Magnitudine apparente:	6.617
Distanza:	172.117 parsec
Moto proprio RA:	-9.4
Moto proprio Dec:	-6.4
B-T magnitude:	6.546
V-T magnitude:	6.612

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 28980
TYCHO-2 2000	TYC 5314-3038-1
USNO-A2.0	USNO-A2 0750-01030834
HIP	HIP 21258

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