Ọrụ Ntụgharị Ụwa na Ntụziaka

International Earth Rotation and Reference Systems Service (IERS), nke bụbu International Earth Rotation Service, bụ otu na ahụ maka idowe oge zuru ụwa ọnụ na ụkpụrụ ntụaka, ọkachasị site na Parameter Orientation Earth (EOP) na International Celestial Reference System (ICRS) .

 Akụkọ ihe mere eme 
E hiwere IERS n'ụdị ya ugbu a na 1987 site n'aka International Astronomical Union na International Union of Geodesy and Geophysics, nọchiri mbụ International Polar Motion Service (IPMS) na ngalaba ntụgharị ụwa nke Bureau International de l'Heure (BIH) . Ọrụ ahụ malitere ịrụ ọrụ na Jenụwarị 1, 1988. Kemgbe mmalite ya, IERS ewepụtala ụlọ ọrụ ọhụrụ gụnyere GPS Coordinating Center na 1990, DORIS Coordinating Center na 1994 na Global Geophysical Fluids Center na 1998. A na akpọbu nzukọ a dị ka International Ọrụ ntụgharị ụwa ruo n'afọ 2003 mgbe ọ gbanwere aha ya ka ọ bụrụ ụdị ọ dị ugbu a, nke nzukọ a họọrọ idowe mkpọaha IERS.

 Ọrụ 
IERS nwere ihe dị iche iche dị na United States, Europe na Australia. N'ime ọrụ ya ndị ọzọ, ndị IERS na ahụ maka ịkpọpụta sekọnd ịwụli elu.

Ndị Sub Bureau maka Ọrụ Ọsọ na Amụma nke Parameters Orientation Ụwa nke IERS, nke dị na United States Naval Observatory, na enyocha ntụgharị ụwa. Akụkụ nke ọrụ ya na agụnye mkpebi nke usoro oge dabere na ọnụego mgbanwe nke ụwa ugbu a. Ọrụ ndị ọzọ nke IERS dị na Paris Observatory.

UT1 bụ oge na abụghị uwe akọwara dabere na ntụgharị ụwa.

Ọ kọwapụtara ntụaka IERS Meridian, International Terrestrial Reference System (ITRS), na Frames International Terrestrial Reference (ITRF) sochirinụ. Sistemu nchikota emetụtara na eji sistemu igodo satịlaịtị dịka GPS na Galileo: WGS84 na GTRF. Nkọwa na mmekọrịta dị n'etiti ITRF, ICRF na EOP bụ ụkpụrụ nkwekọrịta IERS. Dịka nke 2022, mgbakọ kacha ọhụrụ bụ Mgbakọ IERS (2010).

 Ngwaahịa nghazi ụwa 
Ebumnuche nke IERS bụ ịnye ndị obodo geodesy ka ukwuu ozi nhazi ụwa n'ụdị akwụkwọ akụkọ:

 See also 

 Astrometry
 International Atomic Time
 Coordinated Universal Time
 International Terrestrial Reference System and Frame
 Leap second
 International Celestial Reference System and its realizations
 Earth rotation, ΔT
 IERS Reference Meridian
 List of astronomical societies





 Official website
 (in English, French, and Russian) Earth Orientation Center of the IERS : data and interactive analysis (Paris Observatory)
 (in English and French) IERS International Celestial Reference Frame center