| | Astronomical Longitude of Paramaribo, The Surveying and Land Information Science - Find Articles (Site not responding. Last check: 2007-10-18) |
 | | This paper explores the notion and proves that the astronomical longitude of Paramaribo published by Roelofs in his book, Astronomy Applied to Land Surveying, is based on Van Stockum's astronomical observations in 1911, corrected for precession and nutation. |
 | | The explanation thus [for AT = 11.628s] is that while Van Stockum had believed that he had determined the GMT of his instant of observation with his method of moon altitudes in combination with sidereal time, he had actually determined Ephemeris Time (ET). |
 | | During Van Stockum's time it was not known that the rotation of the Earth was not uniform and, consequently, the Ephemeris of the moon was given in GMT time instead of ET Van Stockum referenced the longitude of Paramaribo with respect to the Ephemeris meridian instead of the Greenwich meridian. |
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