2016年10月27日 · Remember LHA is the measurement of how far the sun is to the West of us, so in this example our DR Longitude is 120ºW and the sun’s GHA is 100º. If we subtract the GHA …

On this page discussing Local Hour Angle and Astro Navigation, we correlate the estimated longitude of the observer with the Sun’s Greenwich Hour Angle (GHA), as obtained from the …

2019年10月31日 · The GHA of a star is made up of two components: the GHA of Aries and the SHA of the star. Aries is a benchmark in the sky that “circles” the Earth at the same speed as …

When trying to solve the PZX triangle, we need to know the LHA. This is simply the angle between our Longitude (by EP) and the Sun’s Longitude (called its Greenwich Hour Angle, …

2019年6月27日 · To find LHA in the Western Hemisphere, the formula for LHA is GHA minus assumed longitude. In the Eastern Hemisphere, the formula is GHA plus assumed longitude. …

2019年3月26日 · 地球雖是球體但其實是一個不規則的扁球稱做「地球形」，地球內部物質分布和地球形狀有關，假設地球內部組成物質分布平均，則由地球引力和自轉的慣性離心力造成的地 …

Using an example, this video explains the relationship between longitude (celestial) of an observer,; and Greenwich hour angle (GHA), and local hour angle (LHA) of a celestial body. …

LHA : LHA (Local Hour Angle) is the angle between the meridian of the celestial object and the meridian of the observer, LHA = GHA (of celestial object) - Longitude (of observer). SHA : …

格林威治时角（GHA）是格林威治天子午线沿天赤道向西到天体时圆所夹的角距，范围为0°~360°。 格林威治时角是天文导航中的一个重要术语，用于表示天体的经度信息。

GHA of sun for that day, and for hours in 5 Record "Dec" in 20, and increment "d" in 21 º ' . 14 INCREMENT in GHA for min & s of sight; Inc. & Corr. table º + ' . 15 GHA TOTAL 13 +14 º ' . + …