This work considers the elliptic restricted three-body problem under effects of radiation of the bigger primary, and an oblate spheroid for the smaller primary to mimic an exoplanetary system with a gas giant planet. Under the in uences of both effects we look for the existence of the triangular equilibrium points and the in uences of the radiation and oblateness on the locations and motion of the points. We set the system in a normalized rotating coordinate system and derive equations of motion for the third infinitesimal object. Our study shows that the effects modify the equilateral/isosceles triangle shape with respect to the primaries. The triangular points also have non-planar motion with period depending on the value of the planet oblateness.

ABSTRACT
1. INTRODUCTION
2. EQUATIONS OF MOTION
3. Location of Triangular Equilibrium Points
REFERENCES

• B. Dermawan(Astronomy Research Division, Bandung Institute of Technology)
• I. N. Huda(Undergraduate Program in Astronomy, Bandung Institute of Technology)
• R. W. Wibowo(Graduate Program in Computational Science, Bandung Institute of Technology)
• T. Hidayat(Astronomy Research Division, Bandung Institute of Technology)
• J. A. Utama(Graduate Program in Astronomy, Bandung Institute of Technology)
• D. Mandey(Graduate Program in Astronomy, Bandung Institute of Technology)
• I. Tampubolon(Undergraduate Program in Astronomy, Bandung Institute of Technology)