Periodicity of KT Eri

• Analyzed Photometric Data

Analysised photometric data are consit of 7521 points from JD=2455228 to 2455272
which are not only my own observation but also AAVSO's .

• Analysis methods

PDM and DFT
Peranso Version 2.31 (C)CBA Belgium Observatory

• Results

There seems to be three periods which are 5day(or 2.5day), 0.5day and 0.03day.

(1) 5-day(or 2.5day) Period - Orbital one? -

P1=5.2288 day (or 2.6339day)

(2)0.5-day Period

P=0.4958 day

(3)Less than 0.05-day Period -temporary QPO

for example in JD=2455214 ,

JD=2455236

and JD=2455248 .

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