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> Martin Lehky (Hradec Králové, CZ (MPC 048))

STAR
Coordinates RA DE:

Belong to project:	B.R.N.O. MEDUZA TRESCA HERO


> Light curve and airmass <

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JD format:	geocentric heliocentric

date:	20.4.2018 19:40-2:26 UT


Photometric filter:	U B V R I Clear u v b y (Strömgren phot. system) other:

Photometric system:	instrumental standardní photometric system UBVRcIc

Notes:	# NAME EF CVn # VAR 13:36:38.42 +28:11:40.6 2452308.4873 0.2720494 13.08-13.56c EW (VSX 20180421) # OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7) # FLT Rc # RED CMunipack 1.1.26 + Peranso 2.50 + SPHE/VSES Upload Form (2012) var.astro.cz # NOTE 20/21 IV 2018; Rc_280_90s (214); 7.4h; minimum P, maximum, minimum S # NOTE 2458229.38151 +/- 0.00042; 20180420 21:09:22 (UT) GEO # NOTE 2458229.51454 +/- 0.00045; 20180421 00:20:56 (UT) GEO # COND clear weather info

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GCVS:
star: EF CVn
RA2000:
DE2000:
type: EW
max: 13.08
min: 13.56
band: *
epoch: 52308.4873
year:
period: 0.2720494
M-m:
spectrum:

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