inertial reference frame (IRF)


ECSS-E-ST-60-20C Rev. 2


reference frame determined to provide an inertial reference


  • NOTE 1 E.g. use the J2000 reference frame as IRF as shown in Figure 3-4.
  • NOTE 2 The J2000 reference frame (in short for ICRF - Inertial Celestial Reference Frame at J2000 Julian date) is usually defined as Z IRF = earth axis of rotation (direction of north) at J2000 (01/01/2000 at noon GMT), X IRF = direction of vernal equinox at J2000, Y IRF completes the right-handed orthonormal reference frame.
Glossary app image

ECSS Glossary mobile applications

ECSS Glossary mobile apps available from iOS and Android store and ECSS Glossary Plugin for MS Word available from Microsoft Appstore
Search the online Glossary