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Norwegian Astronomical Society - Variable Star Section Variable Star Observations for 2003 Apr 21 - May 03 UT (J.D. 2452751 - 2452763) Observer: Birger Andresen (ABG). Location: Trondheim, Norway. Observations: Visual, Argelander step estimates. Variable YYYYMMDD.DDD Magn Obs Instrum. Mag.ref. Codes Estimates [Class] CEPdelta 20030503.018 4.0 ABG N TYC1-V KT D2V2G [1] CRBR 20030421.945 6.9 ABG B7x50 NAS.VSS KY C5V3D [1] CRBR 20030422.903 6.8 ABG B7x50 NAS.VSS KY C4V4D [1] CRBR 20030423.896 6.8 ABG B7x50 NAS.VSS KY C4V4D [1] CRBR 20030424.917 6.8 ABG B7x50 NAS.VSS KY C3V5D [1] CRBR 20030425.906 6.7 ABG B7x50 NAS.VSS KY C2V5D [1] CRBR 20030430.926 6.3 ABG B7x50 NAS.VSS K B5V2C [1] CRBR 20030503.017 6.3 ABG B7x50 NAS.VSS K B5V2C [1] CYGSS 20030421.956 9.8 ABG C280;140X NAS.VSS KTY E3V1F;V4G [1] CYGSS 20030422.947 9.4 ABG C280;140X NAS.VSS KTY D3V4F [1] CYGSS 20030423.917 9.1 ABG L70;24X NAS.VSS KTY C4V4E [1] CYGSS 20030424.926 8.9 ABG L70;24X NAS.VSS KTY C2V2D [1] CYGSS 20030425.931 8.4 ABG L70;24X NAS.VSS KTY A5V3C [1] CYGSS 20030430.935 8.6 ABG L70;24X NAS.VSS KTY A5V1C;V4D [1] CYGSS 20030503.004 8.7 ABG L70;24X NAS.VSS KTY B4V4D [1] Sequence for Delta Cephei (V-magnitudes from Tycho-1 catalogue): D = Alfa Lac (3.78 mag); G = Xi Cep (4.26 mag) Sequence for R Coronae Borealis (VT-mag. from Tycho-2 [B-D]): B = Upsilon CrB (5,79 mag); C = HR 5813 (6.50 mag); D = HD 144287 (7.19 mag) Sequence for SS Cygni (VT-mag. from Tycho-2 [A-G]): A = TYC 3196-1605 ( 7.82 mag); B = TYC 3196-1137 (8,33 mag) C = TYC 3196-1988 ( 8.75 mag); D = TYC 3196-2202 (9,10 mag) E = TYC 3196-1227 ( 9.47 mag); F = TYC 3196-0785 (9,80 mag) G = TYC 3196-1019 (10.36 mag)
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