|
发表于 2013-10-7 22:47:46
|
显示全部楼层
本帖利用樓主的發帖,詳細說明【真太陽時】的計算步驟:
按樓主在第1樓的數據: 2013年9月21日, 中午12:00:00, 地理經度: 東經114.5 度、北緯25.00度,求真太陽時:
1. 計算【經度時差 (化為秒數)】 每度等於4分鐘 : 114.5 - 120 = -5.5 度(時角) X 4, 化為時分秒= 22分0.0秒
2. 平均太陽時 = 當地鐘錶用事時間 - 經度時差 = 12時0.0秒(43200秒) - 22分0.0秒 = 11時38分0.0秒
3. 【均時差】(EOT, Equotion of Time) = 6分54.2049秒
4. Apparent Time【視太陽時】= 平均太陽時再加上【均時差】(EOT) = 11時38分0.0秒+ 7分1.3058秒 = 11時44分54.2049秒
5. 計算真太陽時與視太陽時的時間差( Delta-T ) = 1分7.1538秒
6. 【真太陽時】 = 視太陽時 + 時間差( Delta-T ) = 11時44分54.2049秒 + 1分7.1538秒 = 11時46分1.3587秒 ............(1)
【註】: Delta-T 是一個變動值,非固定值。
再按天文計算公式驗算: 2013年9月21日, 中午12:00:00, 地理經度: 東經114.5 度、北緯25.00度
ε 黃赤交角 = 23度26分15.0329秒
太陽黃經纏度 = 178度40分3.3956秒
太陽黃道緯度 = 0.2381秒
日赤經度 = 178度46分38.922秒
日赤緯度 = 31分47.4796秒
日出之時角 = 91度2分54.7507秒 (根據太陽黃經纏度及太陽黃道緯度 計算)
日出時間 = 6時10分54.1451秒 (根據日出時角計算)
日落時間 = 18時19分17.4452秒
日照時間 = 12時8分23.3001秒
太陽經過中天的當地鐘錶時間 = 12時15分5.7951秒 ( 把日出時間及日落時間相加, 除2 求中點值,即是太陽經過當地子午圈的時間)
即: 日出時間 6時10分54.1451秒 + 日落時間 18時19分17.4452秒 / 2 = 12時15分5.7951秒
太陽經過中天的當地鐘錶時間 = 12時15分5.7951秒 , 代表視太陽時比鐘錶時間慢 15分5.7951秒,
也可看成當地鐘錶時間比【視太陽時】快15分5.7951秒
用事時間 12:00:00 - 太陽經過中天的當地鐘錶時間= -15分5.7951秒
Apparent Time【視太陽時】= 用事時間 12:00:00 -15分5.7951秒 = 11時44分54.2049秒
【真太陽時】 = 視太陽時 + 時間差( Delta-T ) = 11時44分54.2049秒 + 1分7.1538秒 = 11時46分1.3587秒 .......(2)
結果 (1) 與 結果(2) 兩者驗算結果相同。
以上天文數據計算,乃個人按照 Astronomical Algorithms (1991) 書中天文公式,設計電腦程序所計算。
(版權屬原作者,轉載請註明出處)
【2013年 均時差】
【注意】: 下表所列之均時差,是以每日零晨 0:0:0 為起點計算。
年 月 日 2013年均時差 EOT 分 秒
2013 1 1 -204.7388676 3 24.73887
2013 1 2 -232.8426077 3 52.84261
2013 1 3 -260.6176367 4 20.61764
2013 1 4 -288.0355454 4 48.03555
2013 1 5 -315.0677468 5 15.06775
2013 1 6 -341.6855191 5 41.68552
2013 1 7 -367.8601232 6 7.860123
2013 1 8 -393.563025 6 33.56303
2013 1 9 -418.7661553 6 58.76616
2013 1 10 -443.4420534 7 23.44205
2013 1 11 -467.5637869 7 47.56379
2013 1 12 -491.1047133 8 11.10471
2013 1 13 -514.0383289 8 34.03833
2013 1 14 -536.3384502 8 56.33845
2013 1 15 -557.9797696 9 17.97977
2013 1 16 -578.9385804 9 38.93858
2013 1 17 -599.1933642 9 59.19336
2013 1 18 -618.725053 10 18.72505
2013 1 19 -637.5169894 10 37.51699
2013 1 20 -655.5547504 10 55.55475
2013 1 21 -672.8259771 11 12.82598
2013 1 22 -689.3202516 11 29.32025
2013 1 23 -705.0289903 11 45.02899
2013 1 24 -719.9453278 11 59.94533
2013 1 25 -734.0639982 12 14.064
2013 1 26 -747.3812198 12 27.38122
2013 1 27 -759.8945552 12 39.89456
2013 1 28 -771.6027133 12 51.60271
2013 1 29 -782.5052993 13 2.505299
2013 1 30 -792.6025764 13 12.60258
2013 1 31 -801.8953098 13 21.89531
2013 2 1 -810.3847195 13 30.38472
2013 2 2 -818.0725085 13 38.07251
2013 2 3 -824.9609217 13 44.96092
2013 2 4 -831.0528008 13 51.0528
2013 2 5 -836.3516083 13 56.35161
2013 2 6 -840.8613627 14 0.861363
2013 2 7 -844.5864189 14 4.586419
2013 2 8 -847.5310942 14 7.531094
2013 2 9 -849.6992743 14 9.699274
2013 2 10 -851.0942244 14 11.09422
2013 2 11 -851.7187882 14 11.71879
2013 2 12 -851.5759681 14 11.57597
2013 2 13 -850.669675 14 10.66967
2013 2 14 -849.0053628 14 9.005363
2013 2 15 -846.5903599 14 6.59036
2013 2 16 -843.433892 14 3.433892
2013 2 17 -839.5469211 13 59.54692
2013 2 18 -834.9419397 13 54.94194
2013 2 19 -829.6327883 13 49.63279
2013 2 20 -823.6345031 13 43.6345
2013 2 21 -816.9631879 13 36.96319
2013 2 22 -809.6359089 13 29.63591
2013 2 23 -801.6706104 13 21.67061
2013 2 24 -793.0860206 13 13.08602
2013 2 25 -783.9015128 13 3.901513
2013 2 26 -774.1369191 12 54.13692
2013 2 27 -763.812346 12 43.81235
2013 2 28 -752.9480637 12 32.94806
2013 3 1 -741.5644996 12 21.5645
2013 3 2 -729.6823037 12 9.682304
2013 3 3 -717.322398 11 57.3224
2013 3 4 -704.5059319 11 44.50593
2013 3 5 -691.2541023 11 31.2541
2013 3 6 -677.5878488 11 17.58785
2013 3 7 -663.5274672 11 3.527467
2013 3 8 -649.0922194 10 49.09222
2013 3 9 -634.3000453 10 34.30005
2013 3 10 -619.1674942 10 19.16749
2013 3 11 -603.7099502 10 3.70995
2013 3 12 -587.9421286 9 47.94213
2013 3 13 -571.87871 9 31.87871
2013 3 14 -555.53492 9 15.53492
2013 3 15 -538.9269074 8 58.92691
2013 3 16 -522.0718772 8 42.07188
2013 3 17 -504.9880405 8 24.98804
2013 3 18 -487.6944822 8 7.694482
2013 3 19 -470.2110194 7 50.21102
2013 3 20 -452.5580769 7 32.55808
2013 3 21 -434.7565779 7 14.75658
2013 3 22 -416.8278559 6 56.82786
2013 3 23 -398.7935931 6 38.79359
2013 3 24 -380.6757803 6 20.67578
2013 3 25 -362.4966701 6 2.49667
2013 3 26 -344.2787099 5 44.27871
2013 3 27 -326.0444783 5 26.04448
2013 3 28 -307.8166818 5 7.816682
2013 3 29 -289.6182411 4 49.61824
2013 3 30 -271.472413 4 31.47241
2013 3 31 -253.4028118 4 13.40281
2013 4 1 -235.4332022 3 55.4332
2013 4 2 -217.5870371 3 37.58704
2013 4 3 -199.8868548 3 19.88685
2013 4 4 -182.3537257 3 2.353726
2013 4 5 -165.0069052 2 45.00691
2013 4 6 -147.8637458 2 27.86375
2013 4 7 -130.9398365 2 10.93984
2013 4 8 -114.2493077 1 54.24931
2013 4 9 -97.80524666 1 37.80525
2013 4 10 -81.62016947 1 21.62017
2013 4 11 -65.70646815 1 5.706468
2013 4 12 -50.07674151 0 50.07674
2013 4 13 -34.74395476 0 34.74395
2013 4 14 -19.72144638 0 19.72145
2013 4 15 -5.022854089 0 5.022854
2013 4 16 9.337973373 0 9.337973
2013 4 17 23.34705765 0 23.34706
2013 4 18 36.99037631 0 36.99038
2013 4 19 50.25395427 0 50.25395
2013 4 20 63.12393753 1 3.123938
2013 4 21 75.58662478 1 15.58662
2013 4 22 87.62845863 1 27.62846
2013 4 23 99.23599007 1 39.23599
2013 4 24 110.3958018 1 50.3958
2013 4 25 121.0943461 2 1.094346
2013 4 26 131.317691 2 11.31769
2013 4 27 141.0512843 2 21.05128
2013 4 28 150.2799503 2 30.27995
2013 4 29 158.9883072 2 38.98831
2013 4 30 167.1615934 2 47.16159
2013 5 1 174.7866493 2 54.78665
2013 5 2 181.8526945 3 1.852694
2013 5 3 188.351655 3 8.351655
2013 5 4 194.2780393 3 14.27804
2013 5 5 199.6285517 3 19.62855
2013 5 6 204.4016525 3 24.40165
2013 5 7 208.5971648 3 28.59716
2013 5 8 212.215929 3 32.21593
2013 5 9 215.2594924 3 35.25949
2013 5 10 217.7298664 3 37.72987
2013 5 11 219.6293998 3 39.6294
2013 5 12 220.9607668 3 40.96077
2013 5 13 221.7270165 3 41.72702
2013 5 14 221.9316218 3 41.93162
2013 5 15 221.5785143 3 41.57851
2013 5 16 220.6721277 3 40.67213
2013 5 17 219.2174615 3 39.21746
2013 5 18 217.2201362 3 37.22014
2013 5 19 214.6864012 3 34.6864
2013 5 20 211.6230798 3 31.62308
2013 5 21 208.0374465 3 28.03745
2013 5 22 203.9370041 3 23.937
2013 5 23 199.329112 3 19.32911
2013 5 24 194.2204907 3 14.22049
2013 5 25 188.6167921 3 8.616792
2013 5 26 182.5225528 3 2.522553
2013 5 27 175.9417705 2 55.94177
2013 5 28 168.8790438 2 48.87904
2013 5 29 161.3408805 2 41.34088
2013 5 30 153.3366559 2 33.33666
2013 5 31 144.8789045 2 24.8789
2013 6 1 135.9829938 2 15.98299
2013 6 2 126.6664993 2 6.666499
2013 6 3 116.9486062 1 56.94861
2013 6 4 106.8496838 1 46.84968
2013 6 5 96.39099766 1 36.391
2013 6 6 85.59448521 1 25.59449
2013 6 7 74.4825753 1 14.48258
2013 6 8 63.07808353 1 3.078084
2013 6 9 51.40418827 0 51.40419
2013 6 10 39.48444374 0 39.48444
2013 6 11 27.34277946 0 27.34278
2013 6 12 15.0034779 0 15.00348
2013 6 13 2.491153974 0 2.491154
2013 6 14 -10.16925626 0 10.16926
2013 6 15 -22.95252675 0 22.95253
2013 6 16 -35.83322733 0 35.83323
2013 6 17 -48.78587488 0 48.78587
2013 6 18 -61.78515639 1 1.785156
2013 6 19 -74.80626915 1 14.80627
2013 6 20 -87.82543726 1 27.82544
2013 6 21 -100.8205656 1 40.82057
2013 6 22 -113.7717988 1 53.7718
2013 6 23 -126.6616213 2 6.661621
2013 6 24 -139.4742463 2 19.47425
2013 6 25 -152.1943866 2 32.19439
2013 6 26 -164.8058705 2 44.80587
2013 6 27 -177.2906661 2 57.29067
2013 6 28 -189.6286356 3 9.628636
2013 6 29 -201.7979315 3 21.79793
2013 6 30 -213.7756702 3 33.77567
2013 7 1 -225.5385303 3 45.53853
2013 7 2 -237.0631341 3 57.06313
2013 7 3 -248.3262626 4 8.326263
2013 7 4 -259.3049976 4 19.305
2013 7 5 -269.9768244 4 29.97682
2013 7 6 -280.3196764 4 40.31968
2013 7 7 -290.311922 4 50.31192
2013 7 8 -299.9323365 4 59.93234
2013 7 9 -309.1600959 5 9.160096
2013 7 10 -317.9747936 5 17.97479
2013 7 11 -326.3564555 5 26.35646
2013 7 12 -334.2855617 5 34.28556
2013 7 13 -341.7431134 5 41.74311
2013 7 14 -348.7107814 5 48.71078
2013 7 15 -355.1711307 5 55.17113
2013 7 16 -361.1078979 6 1.107898
2013 7 17 -366.5063405 6 6.50634
2013 7 18 -371.3536986 6 11.3537
2013 7 19 -375.6397384 6 15.63974
2013 7 20 -379.3571848 6 19.35718
2013 7 21 -382.5017469 6 22.50175
2013 7 22 -385.0715382 6 25.07154
2013 7 23 -387.0659963 6 27.066
2013 7 24 -388.484703 6 28.4847
2013 7 25 -389.3265664 6 29.32657
2013 7 26 -389.5896003 6 29.5896
2013 7 27 -389.271194 6 29.27119
2013 7 28 -388.3685614 6 28.36856
2013 7 29 -386.8790995 6 26.8791
2013 7 30 -384.8005771 6 24.80058
2013 7 31 -382.1312138 6 22.13121
2013 8 1 -378.8697264 6 18.86973
2013 8 2 -375.0153515 6 15.01535
2013 8 3 -370.5678164 6 10.56782
2013 8 4 -365.5272605 6 5.527261
2013 8 5 -359.8941505 5 59.89415
2013 8 6 -353.6692224 5 53.66922
2013 8 7 -346.8534496 5 46.85345
2013 8 8 -339.4480171 5 39.44802
2013 8 9 -331.4543176 5 31.45432
2013 8 10 -322.8740238 5 22.87402
2013 8 11 -313.7092792 5 13.70928
2013 8 12 -303.962993 5 3.962993
2013 8 13 -293.6391857 4 53.63919
2013 8 14 -282.7433453 4 42.74335
2013 8 15 -271.2827862 4 31.28279
2013 8 16 -259.2669855 4 19.26699
2013 8 17 -246.707786 4 6.707786
2013 8 18 -233.619305 3 53.6193
2013 8 19 -220.0174533 3 40.01745
2013 8 20 -205.9191639 3 25.91916
2013 8 21 -191.3416032 3 11.3416
2013 8 22 -176.3016537 2 56.30165
2013 8 23 -160.815785 2 40.81578
2013 8 24 -144.9002028 2 24.9002
2013 8 25 -128.5710552 2 8.571055
2013 8 26 -111.8445383 1 51.84454
2013 8 27 -94.73688546 1 34.73689
2013 8 28 -77.26432223 1 17.26432
2013 8 29 -59.44304526 0 59.44305
2013 8 30 -41.28921875 0 41.28922
2013 8 31 -22.81894312 0 22.81894
2013 9 1 -4.048178485 0 4.048178
2013 9 2 15.00735359 0 15.00735
2013 9 3 34.33225885 0 34.33226
2013 9 4 53.91154213 0 53.91154
2013 9 5 73.73066401 1 13.73066
2013 9 6 93.77555626 1 33.77556
2013 9 7 114.0325356 1 54.03254
2013 9 8 134.4880631 2 14.48806
2013 9 9 155.1283573 2 35.12836
2013 9 10 175.9389357 2 55.93894
2013 9 11 196.9041865 3 16.90419
2013 9 12 218.0070476 3 38.00705
2013 9 13 239.2288363 3 59.22884
2013 9 14 260.5492557 4 20.54926
2013 9 15 281.9465974 4 41.9466
2013 9 16 303.3981211 5 3.398121
2013 9 17 324.8805208 5 24.88052
2013 9 18 346.3703337 5 46.37033
2013 9 19 367.8441638 6 7.844164
2013 9 20 389.2786996 6 29.2787
2013 9 21 410.6506198 6 50.65062
2013 9 22 431.9365302 7 11.93653
2013 9 23 453.1130181 7 33.11302
2013 9 24 474.156808 7 54.15681
2013 9 25 495.0449315 8 15.04493
2013 9 26 515.7548408 8 35.75484
2013 9 27 536.2644581 8 56.26446
2013 9 28 556.5522054 9 16.55221
2013 9 29 576.5970604 9 36.59706
2013 9 30 596.378649 9 56.37865
2013 10 1 615.8773587 10 15.87736
2013 10 2 635.074459 10 35.07446
2013 10 3 653.9522117 10 53.95221
2013 10 4 672.4939381 11 12.49394
2013 10 5 690.6839735 11 30.68397
2013 10 6 708.507433 11 48.50743
2013 10 7 725.9497683 12 5.949768
2013 10 8 742.9961983 12 22.9962
2013 10 9 759.6311757 12 39.63118
2013 10 10 775.8380545 12 55.83805
2013 10 11 791.5990352 13 11.59904
2013 10 12 806.8953489 13 26.89535
2013 10 13 821.7075661 13 41.70757
2013 10 14 836.0159059 13 56.01591
2013 10 15 849.8004704 14 9.80047
2013 10 16 863.0413698 14 23.04137
2013 10 17 875.7187458 14 35.71875
2013 10 18 887.8127256 14 47.81273
2013 10 19 899.3033676 14 59.30337
2013 10 20 910.1706777 15 10.17068
2013 10 21 920.394746 15 20.39475
2013 10 22 929.9559923 15 29.95599
2013 10 23 938.8354464 15 38.83545
2013 10 24 947.0149763 15 47.01498
2013 10 25 954.4774251 15 54.47743
2013 10 26 961.206685 16 1.206685
2013 10 27 967.1877649 16 7.187765
2013 10 28 972.4068881 16 12.40689
2013 10 29 976.8516227 16 16.85162
2013 10 30 980.5110284 16 20.51103
2013 10 31 983.375813 16 23.37581
2013 11 1 985.4384715 16 25.43847
2013 11 2 986.693338 16 26.69334
2013 11 3 987.1364393 16 27.13644
2013 11 4 986.7650852 16 26.76509
2013 11 5 985.5772621 16 25.57726
2013 11 6 983.571038 16 23.57104
2013 11 7 980.7442129 16 20.74421
2013 11 8 977.0943222 16 17.09432
2013 11 9 972.6189022 16 12.6189
2013 11 10 967.315803 16 7.315803
2013 11 11 961.1833707 16 1.183371
2013 11 12 954.2204536 15 54.22045
2013 11 13 946.4263113 15 46.42631
2013 11 14 937.8005214 15 37.80052
2013 11 15 928.3429309 15 28.34293
2013 11 16 918.0536582 15 18.05366
2013 11 17 906.9331578 15 6.933158
2013 11 18 894.9823783 14 54.98238
2013 11 19 882.2030256 14 42.20303
2013 11 20 868.597879 14 28.59788
2013 11 21 854.1710746 14 14.17107
2013 11 22 838.9282943 13 58.92829
2013 11 23 822.8768712 13 42.87687
2013 11 24 806.0258645 13 26.02586
2013 11 25 788.3861443 13 8.386144
2013 11 26 769.9704842 12 49.97048
2013 11 27 750.7936478 12 30.79365
2013 11 28 730.8724798 12 10.87248
2013 11 29 710.226008 11 50.22601
2013 11 30 688.8755082 11 28.87551
2013 12 1 666.8444182 11 6.844418
2013 12 2 644.1580118 10 44.15801
2013 12 3 620.8428761 10 20.84288
2013 12 4 596.9263942 9 56.92639
2013 12 5 572.4364542 9 32.43645
2013 12 6 547.4014507 9 7.401451
2013 12 7 521.8504266 8 41.85043
2013 12 8 495.8131081 8 15.81311
2013 12 9 469.3196993 7 49.3197
2013 12 10 442.4005082 7 22.40051
2013 12 11 415.0855992 6 55.0856
2013 12 12 387.4046178 6 27.40462
2013 12 13 359.3867836 5 59.38678
2013 12 14 331.0609591 5 31.06096
2013 12 15 302.4557278 5 2.455728
2013 12 16 273.5995004 4 33.5995
2013 12 17 244.520688 4 4.520688
2013 12 18 215.2479321 3 35.24793
2013 12 19 185.8103181 3 5.810318
2013 12 20 156.2375086 2 36.23751
2013 12 21 126.5598025 2 6.559802
2013 12 22 96.8081654 1 36.80817
2013 12 23 67.01426317 1 7.014263
2013 12 24 37.21047957 0 37.21048
2013 12 25 7.429894551 0 7.429895
2013 12 26 -22.29376334 0 22.29376
2013 12 27 -51.92615423 0 51.92615
2013 12 28 -81.43235877 1 21.43236
2013 12 29 -110.7769706 1 50.77697
2013 12 30 -139.9243044 2 19.9243
2013 12 31 -168.8386706 2 48.83867
|
|