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SIGHT REDUCTION PAGE

Today's Date and GMT:
July 29, 2021    19:06:00

DATE:

GMT: : :
Nav Body:
Assumed Lat: '
Assumed Lon: '
Sextant altitude Hs: '

Height of observer:   Air temp:
Water temp:
Barometric P (PSI or mbs):

Local Noon (GMT):16:59:52

Sunrise (GMT): 09:46:15

Sunset (GMT): 00:13:53

GHA Aries: W 234 09.0'

Equation of Time: -6min28sec

More Results

GHA
Declination
RA
LHA
S.D.
Zn
Hc
Ho

Meridian

crossing

     SUN
104 53.0'
N 18 33.2'
08h37m04s
31 32.7'
15.8 '
239.5
54 50.2'
-0 18.0' 16:59:49
   MOON
216 39.5'
N 3 05.4'
01h09m58s
143 19.2'
15.1'
313.6
-34 32.8'
0 36.5' 09:32:43
  VENUS
72 44.0'
N 9 21.4'
10h45m40s
359 23.7'
6.3"
178.9
58 09.5'
-0 33.7' 19:08:25
   MARS
81 42.0'
N 12 31.0'
10h09m48s
8 21.7'
1.8"
196.7
60 24.1'
-0 33.7' 18:32:33
JUPITER
261 47.2'
S 12 34.6'
22h09m27s
188 26.9'
24.1"
16.9
-60 26.5'
-0 33.8' 06:32:12
SATURN
281 02.2'
S 18 21.9'
20h52m27s
207 41.9'
9.3"
54.4
-57 07.3'
-0 33.8'
05:15:12
Acamar
189 22.8'
S 40 13.2'
02h59m05s
116 02.5'
0"
248.9
-42 39.0'
-0 33.8'
11:21:50

SIGHT REDUCTIONS

The results above correspond to data found in the Nautical Almanac with an accuracy of   ± 0.1 minute.
Fill in all boxes in the Data Form at left. If you have more than 2 sight reductions, you can calculate a fix by selecting the 2 sight reductions you want to use. All calcuations on this page (and the popups) are based on the data submitted in the form.

Program written by M. Smith based on algorithms from "Astronomical Algorithms", by Jean Meeus

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More Astronomical Info

Day of Year = 210
Julian Date JD = 2459425.2958333
JD Ephemeris= 2459425.2969364
Sun-Earth distance = 1.02 AU = 151879195 km = 94373357 mi
Earth-Moon distance = 396804 km = 246562 mi
Earth-Venus distance = 1.33 AU = 199004364 km = 123655579 mi
Earth-Mars distance = 2.55 AU = 381456588 km = 237026135 mi
Earth-Jupiter distance = 4.08 AU = 610435523 km = 379307048 mi
Earth-Saturn distance = 8.94 AU = 1337015410 km = 830782859 mi
Day = 29.795833333333
UT = 19.1hours
deltaT=95.30573seconds
TD = 19.126473813889
hours JD = 2459425.2958333
JDE= 2459425.2969364
t corrector = 0.051617720174834
corrected JDE= 2459425.2453187
DOY = 210
T (from JD) = 0.21575074150126
T (from JDE = 0.21575077170182
tau (from JDE) = 0.021575077170182
corrected taue = 0.021574935848567
SHA theta = 234.15347016091
nutation in longitude delta Rho = -14.590831972608
nutation of the ecliptic = 3.4938653472506 obliquity of the ecliptic = 23.437455967698
earth l = 306.88104360503
earth r = 1.0152488345261
earth b = 0.00010289880142938
223.01899343102
Lnot=127.66034301919
epsilon= 23.437455967698
alpha=129.26551284444 nutation in longitude=-14.590831972608
equation of time E=00:06:28