Astrophysics and Space Science

, Volume 142, Issue 1–2, pp 99–101 | Cite as

Physical parameters of the massive multiple system eta Orionis

  • C. Waelkens
  • P. Lampens
Third Session Wide Components in Multiple Systems


The bright massive object η Orionis is at the same time a totally eclipsing system, a spectroscopic triple system, a speckle triple system and a visual binary. These circumstances offer an exceptional opportunity for determining the physical parameters of massive stars. Our observations show that the published elements are wrong. We present a new determination of several parameters of the multiple system and propose new visual observations.


Massive Star Triple System Photometric Observation Distance Modulus Speckle Interferometry 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Kluwer Academic Publishers 1988

Authors and Affiliations

  • C. Waelkens
    • 1
  • P. Lampens
    • 1
  1. 1.Astronomisch InstituutKatholieke Universiteit LeuvenBelgium

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