Two Differing Definitions of the Dynamical Equinox and the Mean Obliquity

Details Two Differing Definitions of the Dynamical Equinox and the Mean Obliquity Two Differing Definitions of the Dynamical Equinox and the Mean Obliquity

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a...101l..17s&link_type=abstract

Astronomy and Astrophysics, Vol.101, P. L17, 1981

Astronomy and Astrophysics

Astrophysics

34

Scientific paper

When one computes (either implicitly or explicitly) the location of the dynamical equinox, E, or the value of the mean obliquity, s, in a rotating reference frame, one gets different results from those computed in an inertial frame. The differences, E(rotating) -E(inertial) = 0".09363 (for Bl950.0), = -0".09366 (for J2000) and ɛ(rotating) -ɛ (inertial) = + 0'.00364 (for Bl950.0), = + 0".00334 (for J2000), must be accounted for when intercomparing results.

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