Recalculated Polar Motion Data on Homogeneous System of International Latitude Service
Entry ID: NAOMIZI-1

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Summary
Abstract: Acting as the international latitude measurement service(ILS), this
international joint measurement of latitude was carried out from 1899
to 1978.

The ILS central station(Mizusawa) used the measured data, and expressed
the change of latitude at all the observatories by a uniform system.
This sytem is independent of the error in the positions of stars and the
error in instrument constants.

In this file, the coordinate values of polar motion(X, Y) have been
recorded with the unit of angular second.
Geographic Coverage
Spatial coordinates   
  N: 90.0   S: -90.0   E: 180.0   W: -180.0

Temporal Coverage
Start Date: 1899-08-06
Stop Date: 1978-09-02
ISO Topic Category
Instrument
TELESCOPES Ancillary Description
Originating Center
Data Center
National Astronomical Observatory, Japan Supplemental Info
Data Center URL: http://www.nao.ac.jp/
Dataset ID: VAREOP DATA

Data Center Personnel
Name: TOSHIAKI ISHIKAWA
Phone: 81-197-22-7152
Contact Address:
2-12 Hoshigaoka-cho, Mizusawa-shi
City: Iwate
Postal Code: 023
Country: Japan
Personnel
Role: DIF AUTHOR
Role: TECHNICAL CONTACT
Phone: 81-197-22-7152
Contact Address:
2-12 Hoshigaoka-cho, Mizusawa-shi
City: Iwate
Postal Code: 023
Country: Japan
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Publications/References
Results of the International Latitude Service in a Homogeneous
System 1899-1980
Extended Metadata Properties
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Creation and Review Dates
Last DIF Revision Date: 1997-01-15
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