The International Earth Rotation and Reference Systems Service (IERS), formerly the International Earth Rotation Service, is the body responsible for maintaining...
7 KB (579 words) - 16:58, 29 March 2025
months in advance in "Bulletin C" produced by the International Earth Rotation and Reference Systems Service. The leap seconds cannot be predicted far in advance...
52 KB (6,114 words) - 00:07, 18 July 2025
abandoned IERS Earth Orientation Center: Earth rotation data and interactive analysis International Earth Rotation and Reference Systems Service (IERS) If...
43 KB (4,884 words) - 10:56, 21 July 2025
Earth-fixed (ECEF) reference frames. The ITRS and ITRF solutions are maintained by the International Earth Rotation and Reference Systems Service (IERS). Practical...
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International Earth Rotation and Reference Systems Service (IERS). It passes about 5.3 arcseconds east of George Biddell Airy's 1851 transit circle, and thus it...
14 KB (826 words) - 04:20, 24 June 2025
International Celestial Reference System and Frame (Technical report). Frankfurt am Main: International Earth Rotation and Reference Systems Service (IERS)...
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day. Earth's rotation period relative to the fixed stars, called its stellar day by the International Earth Rotation and Reference Systems Service (IERS)...
218 KB (19,389 words) - 07:59, 5 August 2025
Polar motion (redirect from Earth Wobble Cause)
motion of the Earth is the motion of the Earth's rotational axis relative to its crust.: 1 This is measured with respect to a reference frame in which...
21 KB (2,603 words) - 10:16, 11 May 2025
Sidereal time (redirect from Earth rotation angle)
University Press. ISBN 0-521-63280-3. "Earth Rotation Angle". International Earth Rotation and Reference System Service. 2013. Retrieved 20 March 2018. Explanatory...
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also works for the International Earth Rotation and Reference Systems Service. In recognition of his work on Global Positioning System (GPS) satellite navigation...
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taken over by the International Bureau of Weights and Measures (BIPM) and the International Earth Rotation and Reference Systems Service (IERS). The creation...
3 KB (423 words) - 05:57, 1 November 2024
Prime meridian (redirect from International Prime Meridian)
to denote the Earth's prime meridian (0° longitude) by the International Earth Rotation and Reference Systems Service, which defines and maintains the...
61 KB (4,770 words) - 16:22, 28 July 2025
Satellite navigation (redirect from Satellite navigation systems)
The International GNSS Service (IGS) International Global Navigation Satellite Systems Society Inc (IGNSS) International Earth Rotation and Reference Systems...
45 KB (4,562 words) - 19:13, 4 August 2025
Astronomical unit (redirect from Distance from the earth to the sun)
no. 36: General definitions and numerical standards (Report). International Earth Rotation and Reference Systems Service. Archived (PDF) from the original...
52 KB (5,301 words) - 16:12, 31 July 2025
Leap second (category Articles needing additional references from December 2023)
in advance by the International Earth Rotation and Reference Systems Service (IERS), to ensure that the difference between the UTC and UT1 readings will...
72 KB (7,715 words) - 15:37, 27 July 2025
Observatory and HM Nautical Almanac Office. Besides the IAU list of units and constants, also the International Earth Rotation and Reference Systems Service defines...
14 KB (945 words) - 07:49, 16 November 2024
the International Earth Rotation and Reference Systems Service (IERS), which replaced the International Polar Motion Service and the earth-rotation section...
58 KB (6,010 words) - 15:16, 19 July 2025
from a measure of the Earth's angle with respect to the International Celestial Reference Frame (ICRF), called the Earth Rotation Angle (ERA, which serves...
22 KB (2,414 words) - 13:02, 22 June 2025
ever-changing orientation of the Earth in space are available from the International Earth Rotation and Reference Systems Service. Examples include: J2000: One...
8 KB (943 words) - 17:00, 5 September 2023
introduction of improved transportation and communications systems in the 20th century that the question of an International Date Line truly became a question...
50 KB (5,879 words) - 07:35, 25 July 2025
Day length fluctuations (category Earth)
interactions between the dynamic atmosphere and Earth itself. The International Earth Rotation and Reference Systems Service monitors the changes. In the absence...
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Geographical pole (redirect from Earth's poles)
of Earth's North and South Poles". Scientific American. Retrieved 6 January 2019. "Polar motion". International Earth Rotation and Reference Systems Service...
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Day (category Articles needing additional references from May 2023)
announced in advance by the International Earth Rotation and Reference Systems Service (IERS), which measures the Earth's rotation and determines whether a leap...
35 KB (3,702 words) - 03:20, 5 August 2025
time and solar time. Its measurement by several observatories is coordinated by the International Earth Rotation and Reference Systems Service (IERS)...
19 KB (2,449 words) - 17:14, 2 August 2025
Tidal acceleration (section Earth–Moon system)
as ΔT. Recent values can be obtained from the International Earth Rotation and Reference Systems Service (IERS). A table of the actual length of the day...
37 KB (4,801 words) - 15:43, 24 May 2025
and numerical standards. International Earth Rotation and Reference Systems Service. For complete document see Gérard Petit and Brian Luzum, ed. (2010)...
11 KB (1,220 words) - 08:46, 1 August 2025
Greenwich Mean Time (category Articles needing additional references from June 2025)
General. 1971. (Irish statute) International Earth Rotation and Reference Systems Service The original BBC World Service GMT time signal in MP3 format...
21 KB (2,482 words) - 23:29, 5 August 2025
Geodesy (redirect from Geodetic and Geomatic Engineering)
such frame is WGS84, as well as frames by the International Earth Rotation and Reference Systems Service (IERS). GNSS receivers have almost completely...
38 KB (4,258 words) - 01:52, 17 July 2025
In the same period it appears in other records and lists of ships stores. The earliest recorded reference that can be said with certainty to refer to a...
22 KB (2,501 words) - 19:40, 23 July 2025
Chronometry (redirect from Time and frequency metrology)
Kellogg Edey Allan variance Clock drift International Earth Rotation and Reference Systems Service Time and Frequency Standards Laboratory Time deviation...
27 KB (3,233 words) - 20:33, 4 May 2025