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Twelve groups of stars were studied in the program, each group containing six pairs of stars. Each night, each station observed two of the star groups along a preset schedule and later compared the data against the measurements taken by the sister stations. Economic difficulties and war caused the
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implement a systematic study of this important phenomenon. In 1895, the creation of the
International Latitude Service was decided by the International Geodesic Association. Its central office was based in Potsdam and headed by
242:. Regular observations began in 1899. After 1916, the operations of the International Latitudes Service continued under the aegis of the Reduced Geodetic Association among Neutral States presided by Raoul Gautier director of
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309:. The data collected by the observatories over the years still has use to scientists, and has been applied to studies of polar motion, the physical properties of the Earth, climatology and
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of 39° 08' north latitude. The alignment of all six stations along the parallel helped the observatories to perform uniform data analysis. The original six observatories were located in:
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Comptes-rendus des séances de la
Commission permanente de l'Association géodésique internationale réunie à Florence du 8 au 17 octobre 1891
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In 1891, at the meeting of the
Permanent Commission of the International Geodetic Association in Florence,
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closings of some of the original stations, though a newer station was created in
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The history of the
Gaithersburg Observatory in Maryland, and the overall project
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The final six observatories were located, in order of
Longitude (E to W), in:
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Yokoyama, Koichi; Manabe, Seiji; Sakai, Satoshi (January 2000).
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767:"Polar motion | Earth's axis, wobble, precession | Britannica"
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International latitude observatory of Ukiah, California, 1908
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commission, Internationale
Erdmessung Permanente (1892).
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Mizusawa, Japan, National
Institutes of Natural Sciences
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Buildings and structures in
Mendocino County, California
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Yokoyama, Koichi; Manabe, Seiji; Sakai, Satoshi (2000).
673:(in French). De Gruyter, Incorporated. pp. 23–25.
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46:. Unsourced material may be challenged and removed.
1231:Buildings and structures in Gaithersburg, Maryland
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1026:Santa Lucia Stroncone Astronomical Observatory
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819:. Cambridge University Press (CUP): 121–138.
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229:in 1765 and his impact on the determination
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632:International Astronomical Union Colloquium
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106:Learn how and when to remove this message
1206:Astronomical observatories in Uzbekistan
1201:Astronomical observatories in California
956:Helmut Ullrich Astronomical Observatory
931:Astronomical Observatory of Capodimonte
791:NAC Green Book of Pacific Coast Touring
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1226:Astronomical observatories in Maryland
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793:(1931) National Automobile Club p.43
737:"Historique Sommaire De La Geodesie"
595:International Earth Rotation Service
251:International Latitude Observatories
44:adding citations to reliable sources
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1236:International geodesy organizations
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1191:Astronomical observatories in Italy
1041:Astronomical Observatory of Trieste
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142:International Polar Motion Service
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1221:Astronomical observatories in Ohio
961:International Latitude Observatory
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432:39.1372944°N 123.2118167°W
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826:10.1017/s0252921100061261
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348:39.1368083°N 77.1988472°W
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412:Ukiah, California, USA:
240:Friedrich Robert Helmert
167:Related media on Commons
1021:San Vittore Observatory
981:Monte Mario Observatory
390:39.1390139°N 84.42333°W
370:Cincinnati, Ohio, USA:
353:39.1368083; -77.1988472
233:. He proposed that the
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986:Noto Radio Observatory
807:Proverbio, E. (2000).
478:39.13500°N 141.13167°E
266:Gaithersburg, Maryland
139:Alternative names
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571:39.1371556; 8.3116389
524:39.13333°N 66.88167°E
395:39.1390139; -84.42333
293:Charjui, Turkmenistan
253:were a system of six
210:of the Earth's axis.
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40:improve this article
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244:Geneva Observatory
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1146:Solar System
1070:Italy portal
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38:Please help
33:verification
30:
1134:Outer space
1122:Spaceflight
747:: 117–129.
706:: 147–162.
569: /
527: /
481: /
468:141°07′54″E
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393: /
351: /
307:World War I
118:Observatory
1180:Categories
776:2023-08-28
613:References
575: (
533: (
514:66°52′54″E
502:Uzbekistan
500:Kitab, in
487: (
441: (
399: (
380:84°25′24″W
357: (
315:navigation
298:Carloforte
204:precession
198:caused by
66:newspapers
1158:Education
1098:Astronomy
835:0252-9211
753:0398-7817
722:0252-9211
654:0252-9211
511:39°08′0″N
465:39°08′6″N
231:latitudes
601:See also
259:parallel
208:"wobble"
196:latitude
152:Location
1170:Science
1084:Portals
300:, Italy
289:, Japan
221:of the
80:scholar
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1110:Stars
206:, or
174:[
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718:ISSN
675:ISBN
650:ISSN
313:and
186:The
59:news
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