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SIGHT REDUCTION PAGE

Today's Date and GMT:
December 13, 2017    5:03:36

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):16:47:44

Sunrise (GMT): 12:10:29

Sunset (GMT): 21:24:53

GHA Aries: W 157 58.6'

Equation of Time: 5min52sec

More Results

GHA
Declination
RA
LHA
S.D.
Zn
Hc
Ho

Meridian

crossing

     SUN
257 22.0'
S 23 09.2'
17h22m26s
184 01.7'
16.2 '
11.8
-71 38.7'
-0 17.5' 16:47:29
   MOON
312 42.2'
S 5 23.7'
13h41m06s
239 21.9'
15.1'
72.9
-26 20.3'
0 36.7' 13:06:08
  VENUS
264 21.4'
S 22 18.4'
16h54m29s
191 01.1'
4.9"
29.5
-68 57.5'
-0 33.7' 16:19:31
   MARS
307 24.3'
S 11 22.0'
14h02m17s
234 04.0'
2.2"
73.8
-34 14.6'
-0 33.7' 13:27:20
JUPITER
296 36.1'
S 14 54.8'
14h45m30s
223 15.8'
15.9"
67.8
-44 20.8'
-0 33.8' 14:10:33
SATURN
248 52.1'
S 22 30.9'
17h56m26s
175 31.8'
7.5"
347.3
-70 56.8'
-0 33.8'
17:21:29
Acamar
113 14.4'
S 40 14.0'
02h58m57s
39 54.1'
0"
209.3
0 52.5'
-0 33.8'
02:23:59

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 = 347
Julian Date JD = 2458100.7108333
JD Ephemeris= 2458100.7118676
Sun-Earth distance = 0.98 AU = 147276378 km = 91513299 mi
Earth-Moon distance = 395503 km = 245754 mi
Earth-Venus distance = 1.69 AU = 253551455 km = 157549570 mi
Earth-Mars distance = 2.11 AU = 316182709 km = 196466827 mi
Earth-Jupiter distance = 6.18 AU = 924279844 km = 574320868 mi
Earth-Saturn distance = 11.04 AU = 1651353652 km = 1026103587 mi
Day = 13.210833333333
UT = 5.06hours
deltaT=89.36117seconds
TD = 5.0848225472222
hours JD = 2458100.7108333
JDE= 2458100.7118676
t corrector = 0.06375450316899
corrected JDE= 2458100.6481131
DOY = 347
T (from JD) = 0.17948558065252
T (from JDE = 0.17948560896937
tau (from JDE) = 0.017948560896937
corrected taue = 0.01794838634662
SHA theta = 157.97974793706
nutation in longitude delta Rho = -12.242838526304
nutation of the ecliptic = -7.3042520197551 obliquity of the ecliptic = 23.434928089076
earth l = 81.381578181878
earth r = 0.98448092960384
earth b = -0.00023090313099803
222.96865367849
Lnot=262.08656237485
epsilon= 23.434928089076
alpha=260.60999265228 nutation in longitude=-12.242838526304
equation of time E=00:05:52