English

Noun

periareion

1. The point in an elliptical orbit around Mars that is closest to Mars.
   • 2013, Christianna E Taylor, Anthony Shao, Nicola Sarzi-Amade, Richard Van Allen, & James Wertz, Hummingbird: Versatile Interplanetary Mission Architecture:

     Mars orbit insertion requires a nominal hyperbolic periareion delta V of 2,491 m/s, at 300 km altitude.

   • 2014 September-October, Masaki Kakoi, Kathleen C Howell, & David Folta, “Access to Mars from Earth–Moon libration point orbits: manifold and direct options”, in Acta Astronautica, volume 102:

     Nakamiya et al. analyzed maneuver strategies at perigee and periareion for Earth-to-Mars transfers [29] and [30].

   • 2015 September, Anil Bhardwaj, S.V. Mohankumar, Tirtha Pratim Das, P. Pradeepkumar, P. Sreelatha, B. Sundar, Amarnath Nandi, Dinakar Prasad Vajja, M.B. Dhanya, Neha Naik, G. Supriya, R. Satheesh Thampi, G. Padma Padmanabhan, Vipin K. Yadav and A.V. Aliyas, “MENCA experiment aboard India's Mars Orbiter Mission”, in Current Science, volume 109:

     Taking advantage of the highly elliptical orbit (~400 km periareion and ~70,000 km apoareion) of MOM, the scientific objective of MENCA is to radially profile the composition of the neutral exosphere of Mars starting from the MOM periareion.