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SIGHT REDUCTION PAGE

Today's Date and GMT:
October 17, 2017    3:40:00

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):16:38:39

Sunrise (GMT): 11:07:31

Sunset (GMT): 22:09:10

GHA Aries: W 80 50.2'

Equation of Time: 14min37sec

More Results

GHA
Declination
RA
LHA
S.D.
Zn
Hc
Ho

Meridian

crossing

     SUN
238 39.2'
S 9 17.7'
13h28m44s
165 18.9'
16 '
333.7
-55 33.6'
-0 17.7' 16:38:44
   MOON
266 48.8'
N 5 20.5'
11h36m06s
193 28.5'
15.5'
18.1
-41 51.4'
0 38.7' 14:46:06
  VENUS
257 07.4'
N 0 03.2'
12h14m51s
183 47.1'
5.3"
5.7
-48 36.5'
-0 33.7' 15:24:51
   MARS
263 38.0'
N 2 28.5'
11h48m49s
190 17.7'
1.9"
14.7
-45 20.0'
-0 33.7' 14:58:49
JUPITER
231 12.0'
S 11 00.6'
13h58m33s
157 51.7'
15.3"
320.9
-54 05.4'
-0 33.8' 17:08:33
SATURN
178 02.5'
S 22 14.6'
17h31m11s
104 42.2'
7.9"
261.7
-25 13.2'
-0 33.8'
20:41:11
Acamar
36 06.2'
S 40 14.0'
02h58m56s
322 45.9'
0"
152.5
1 49.8'
-0 33.8'
06:08:56

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 = 290
Julian Date JD = 2458043.6527778
JD Ephemeris= 2458043.6538121
Sun-Earth distance = 1 AU = 149092879 km = 92642020 mi
Earth-Moon distance = 384453 km = 238888 mi
Earth-Venus distance = 1.56 AU = 233370217 km = 145009530 mi
Earth-Mars distance = 2.48 AU = 371665395 km = 230942170 mi
Earth-Jupiter distance = 6.43 AU = 961736814 km = 597595551 mi
Earth-Saturn distance = 10.53 AU = 1575744652 km = 979122333 mi
Day = 17.152777777778
UT = 3.6666666666667hours
deltaT=89.36117seconds
TD = 3.6914892138889
hours JD = 2458043.6527778
JDE= 2458043.6538121
t corrector = 0.060839673789899
corrected JDE= 2458043.5929724
DOY = 290
T (from JD) = 0.17792341622938
T (from JDE = 0.17792344454621
tau (from JDE) = 0.017792344454621
corrected taue = 0.017792177884672
SHA theta = 80.840625575744
nutation in longitude delta Rho = -11.98547248442
nutation of the ecliptic = -6.7163126181491 obliquity of the ecliptic = 23.435111720239
earth l = 23.969999578977
earth r = 0.99662347743983
earth b = -0.00015168944500625
222.96648543021
Lnot=205.84744037422
epsilon= 23.435111720239
alpha=202.1833749946 nutation in longitude=-11.98547248442
equation of time E=00:14:37