1) 在郁陵岛石圃的太阳位置
以 365日为基准计算天数(Day Number)
计算天数时,以365日为基准,从1月1日至12月31日,1天1天叠加,月1日是1天、2月1日是32天、12月31日是365天(闰年为366天)。 |
② 天角(Day angle)
Г=2π×(天数-1)/365 |
③ 太阳赤经(Solar right ascension)
赤经把360度角分为24份以显示时间。其基准点为春分点。 w=15×【12-(时+分钟/60)】 |
④太阳赤纬(Solar declination)
赤纬与纬度类似,以天球赤道为中心,用角度表示,赤道北侧用0度到90度表示,南侧用0度到-90度表示。 δ=cos-1[(0.006918-0.399912cosГ+0.070257sinГ -0.006758cos2Г+0.000907sin2Г -0.002697cos3Г+0.00148sin3Г)] |
⑤郁陵岛石圃的纬度(Latitude)
Δ=37° 32′.116 |
〈表 13〉365日太阳的子午线高度(春分、夏至、秋分、冬至日期以2011年为基准)
1月 | 2月 | 3月 | 4月 | 5月 | 6月 | 7月 | 8月 | 9月 | 10月 | 11月 | 12月 | |
1 | 29.4 | 34.3 | 44.6 | 56.3 | 67.3 | 74.3 | 75.6 | 70.7 | 61.4 | 49.6 | 38.6 | 30.8 |
2 | 29.5 | 34.6 | 45.0 | 56.7 | 67.6 | 74.4 | 75.6 | 70.4 | 61.0 | 49.2 | 38.3 | 30.6 |
3 | 29.6 | 34.9 | 45.3 | 57.1 | 67.9 | 74.6 | 75.5 | 70.2 | 60.7 | 48.8 | 38.0 | 30.5 |
4 | 29.7 | 35.1 | 45.7 | 57.5 | 68.2 | 74.7 | 75.4 | 69.9 | 60.3 | 48.4 | 37.6 | 30.3 |
5 | 29.8 | 35.4 | 46.1 | 57.9 | 68.5 | 74.8 | 75.3 | 69.7 | 59.9 | 48.0 | 37.3 | 30.2 |
6 | 29.9 | 35.7 | 46.5 | 58.2 | 68.8 | 74.9 | 75.2 | 69.4 | 59.6 | 47.7 | 37.0 | 30.1 |
7 | 30.0 | 36.0 | 46.9 | 58.6 | 69.1 | 75.0 | 75.2 | 69.1 | 59.2 | 47.3 | 36.7 | 29.9 |
8 | 30.1 | 36.3 | 47.3 | 59.0 | 69.3 | 75.1 | 75.0 | 68.8 | 58.8 | 46.9 | 36.4 | 29.8 |
9 | 30.3 | 36.6 | 47.7 | 59.4 | 69.6 | 75.2 | 74.9 | 68.6 | 58.5 | 46.5 | 36.1 | 29.7 |
10 | 30.4 | 36.9 | 48.1 | 59.7 | 69.9 | 75.3 | 74.8 | 68.3 | 58.1 | 46.1 | 35.8 | 29.6 |
11 | 30.5 | 37.2 | 48.5 | 60.1 | 70.1 | 75.4 | 74.7 | 68.0 | 57.7 | 45.8 | 35.5 | 29.5 |
12 | 30.7 | 37.5 | 48.8 | 60.5 | 70.4 | 75.5 | 74.6 | 67.7 | 57.3 | 45.4 | 35.2 | 29.4 |
13 | 30.9 | 37.9 | 49.2 | 60.9 | 70.6 | 75.6 | 74.4 | 67.4 | 57.0 | 45.0 | 35.0 | 29.4 |
14 | 31.0 | 38.2 | 49.6 | 61.2 | 70.9 | 75.6 | 74.3 | 67.1 | 56.6 | 44.6 | 34.7 | 29.3 |
15 | 31.2 | 38.5 | 50.0 | 61.6 | 71.1 | 75.7 | 74.1 | 66.8 | 56.2 | 44.2 | 34.4 | 29.2 |
16 | 31.4 | 38.8 | 50.4 | 61.9 | 71.4 | 75.8 | 74.0 | 66.5 | 55.8 | 43.9 | 34.2 | 29.2 |
17 | 31.6 | 39.2 | 50.8 | 62.3 | 71.6 | 75.8 | 73.8 | 66.1 | 55.4 | 43.5 | 33.9 | 29.1 |
18 | 31.8 | 39.5 | 51.2 | 62.7 | 71.8 | 75.8 | 73.6 | 65.8 | 55.0 | 43.1 | 33.7 | 29.1 |
19 | 32.0 | 39.9 | 51.6 | 63.0 | 72.1 | 75.9 | 73.5 | 65.5 | 54.7 | 42.8 | 33.4 | 29.1 |
20 | 32.2 | 40.2 | 52.0 | 63.4 | 72.3 | 75.9 | 73.3 | 65.2 | 54.3 | 42.4 | 33.2 | 29.1 |
21 | 32.4 | 40.6 | 52.4 春分 | 63.7 | 72.5 | 75.9 | 73.1 | 64.8 | 53.9 | 42.0 | 32.9 | 29.0 |
22 | 32.6 | 40.9 | 52.8 | 64.0 | 72.7 | 75.9 夏至 | 72.9 | 64.5 | 53.5 | 41.7 | 32.7 | 29.0 冬至 |
23 | 32.8 | 41.3 | 53.2 | 64.4 | 72.9 | 75.9 | 72.7 | 64.2 | 53.1 秋分 | 41.3 | 32.5 | 29.0 |
24 | 33.1 | 41.6 | 53.6 | 64.7 | 73.1 | 75.9 | 72.5 | 63.8 | 52.7 | 41.0 | 32.3 | 29.0 |
25 | 33.3 | 42.0 | 54.0 | 65.1 | 73.3 | 75.9 | 72.3 | 63.5 | 52.3 | 40.6 | 32.1 | 29.1 |
26 | 33.5 | 42.3 | 54.4 | 65.4 | 73.5 | 75.9 | 72.1 | 63.2 | 51.9 | 40.3 | 31.9 | 29.1 |
27 | 33.8 | 42.7 | 54.8 | 65.7 | 73.6 | 75.9 | 71.9 | 62.8 | 51.5 | 39.9 | 31.7 | 29.1 |
28 | 34.0 | 43.1 | 55.2 | 66.0 | 73.8 | 75.8 | 71.6 | 62.5 | 51.2 | 39.6 | 31.5 | 29.2 |
29 | 34.3 | 55.5 | 66.4 | 74.0 | 75.8 | 71.4 | 62.1 | 50.8 | 39.3 | 31.3 | 29.2 | |
30 | 34.6 | 55.9 | 66.7 | 74.1 | 75.8 | 71.2 | 61.8 | 50.4 | 38.9 | 31.1 | 29.3 | |
31 | 34.9 | 56.3 | 74.3 | 70.9 | 61.4 | 38.6 | 29.3 |
⑥太阳高度(Altitude)
高度是以地平面为基准计算的角度。 α=sin-1 (sinδsinΔ+cosδcosΔcosω) |
⑦ 方位角(Azimuth)
正南向东逆时针方向的水平角度。 ψ=cos-1 (sinαsinΔ-sinδ)/(cos α cosΔ) |
2) 太阳位于郁陵岛石圃到独岛的线上