perihermion

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English

Etymology

From peri- +‎ hermeo- +‎ -ion.

Noun

perihermion

  1. Periapsis around Mercury.
    • 2012 October, M Kobayashi, H Shibata, K Nogami, M Fujii, T Miyachi, H Ohashi, S Sasaki, T Iwai, M Hattori, H Kimura, T Hirai, S Takechi, H Yano, S Hasegawa, R Srama & E Gru:n, “Mercury dust monitor for the BepiColombo MMO”, in International Workshop of Instrumentation for Planetary Missions:
      The MMO will be in an elliptic orbit around Mercury with the perihermion of 600 km and the aphermion of 11624 km.