**Table 1:** Journal of photoelectric observations; observing stations are identified by their running numbers they have in the Ondrejov/Praha photometric archives.
Station	Time interval	No. of	Passbands	Remark
No.	(HJD-2 400 000)	obs.
1	45 212.6-52 847.6	483	$U\!B{}V$
61	47 868.6-49 038.4	83	V	all-sky
18	50 660.4-52 696.3	66	$U\!B{}V$
43	50 665.0-50 860.6	31	V
3	50 684.5-51 602.3	274	$U\!B{}V$

Observing stations and instruments:
1... Hvar 0.65-m reflector, a photometer with EMI 6256 tube; 3... Skalnaté Pleso 0.60-m reflector with a SSP5 photometer and Hamamatsu R4457 tube; 18... Stará Lesná 0.60-m reflector and a photometer with EMI 9789Q tube; 43... AAVSO photoelectric observing program coordinated by JRP; 61... Hipparcos satellite; $H_{\rm p}$ magnitude (Perryman et al. 1997) transformed to the standard Johnson V after Harmanec (1998).

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