Physics
Scientific paper
Mar 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009oejv...99....1l&link_type=abstract
Open European Journal on Variable Stars, vol. 99, p.1
Physics
Scientific paper
The new EW eclipsing binary HKV5 Lac = CzeV137 = USNO-B1.0 1454-0411281 (R.A. = 22h 34m 29.31s, Decl. = +55o 29' 03.6", J2000.0, R = 16.23 - 16.66 mag, Min. I = HJD 2454387.35273 + 0.387245 x E) and the new EA type eclipsing binary HKV6 Lac = CzeV138 = USNO-B1.0 1455-0409516 (R.A. = 22h 34m 16.26s, Decl. = +55o 34' 24.1", J2000.0, R = 14.10 - 14.23 mag, Min. I = HJD 2454387.58563 + 1.105815 x E) and the new EA type eclipsing binary HKV7 Lac = CzeV139 = USNO-B1.0 1455-0409575 (R.A. = 22h 34m 21.44s, Decl. = +55o 30' 13.8", J2000.0, R = 13.52 - 13.78 mag, Min. I = HJD 2454373.28108 + 1.324325 x E) have been found near the variable star OP Lac by 0.40-m f/5 reflector at Hradec Králové observatory.
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