We present a by-product of our long term photometric monitoring of cataclysmic variables. 2MASS J18024395 +4003309 = VSX J180243.9 +400331 was discovered in the field of the intermediate polar V1323 Her observed using the Korean 1-m telescope located at Mt. Lemmon, USA. An analysis of the two-color VR CCD observations of this variable covers all the phase intervals for the first time. The light curves show this object can be classified as an Algol-type variable with tidally distorted components, and an asymmetry of the maxima (the O’Connell effect). The periodogram analysis confirms the cycle numbering of Andronov et al. (2012) and for the initial approximation, the ephemeris is used as follows: Min I. BJD = 2456074.4904+0.3348837E . For phenomenological modeling, we used the trigonometric polynomial approximation of statistically optimal degree, and a recent method “NAV” (“New Algol Variable”) using local specific shapes for the eclipse. Methodological aspects and estimates of the physical parameters based on analysis of phenomenological parameters are presented. As results of our phenomenological model, we obtained for the inclination i=90°, M1=0.745M◉, M2=0.854M◉, M=M1+M2=1.599M◉, the orbital separation a=1.65·109m=2.37R◉ and relative radii r1=R1/a=0.314 and r2=R2/a=0.360. These estimates may be used as preliminary starting values for further modeling using extended physical models based on the Wilson & Devinney (1971) code and it's extensions

1. INTRODUCTION
 2. OBSERVATIONS
 3. PERIODOGRAM ANALYSIS
 4. PHENOMENOLOGICAL MODELING. MULTI –HARMONIC APPROXIMATION
 5. PHENOMENOLOGICAL MODELING. THE NAVALGORITHM
 6. DISCUSSION
 7.CONCLUSIONS
 ACKNOWLEDGEMENTS
 REFERENCES

• Ivan L. Andronov(Department of High and Applied Mathematics, Odessa National Maritime University)
• Yonggi Kim(Chungbuk National University Observatory,Dept. of Astronomy and Space Science, Chungbuk National University) Corresponding Author
• Young-Hee Kim(Chungbuk National University Observatory,Dept. of Astronomy and Space Science, Chungbuk National University)
• Joh-Na Yoon(Chungbuk National University Observatory,Astronomical Observatory, Odessa National University)
• Lidia L. Chinarova(Astronomical Observatory, Odessa National University)
• Mariia G. Tkachenko(Department of High and Applied Mathematics, Odessa National Maritime University)