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SIGHT REDUCTION PAGE

Today's Date and GMT:
February 25, 2018    9:29:54

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):41:06:23

Sunrise (GMT): 11:33:48

Sunset (GMT): 22:39:35

GHA Aries: W 297 40.3'

Equation of Time: -13min3sec

More Results

GHA
Declination
RA
LHA
S.D.
Zn
Hc
Ho

Meridian

crossing

     SUN
319 12.6'
S 9 02.5'
22h33m51s
245 52.3'
16.2 '
80.7
-24 02.0'
-0 17.5' 17:06:24
   MOON
203 35.8'
N 19 55.5'
06h16m18s
130 15.5'
16.3'
312.5
-13 27.5'
0 42.2' 00:48:52
  VENUS
308 06.8'
S 6 01.7'
23h18m14s
234 46.5'
5"
69.8
-30 03.1'
-0 33.7' 17:50:48
   MARS
40 33.8'
S 22 34.0'
17h08m26s
327 13.5'
3.3"
148
19 21.5'
-0 33.7' 11:40:60
JUPITER
66 45.1'
S 17 23.2'
15h23m41s
353 24.8'
19.3"
172.7
31 06.1'
-0 33.8' 09:56:14
SATURN
20 03.1'
S 22 22.4'
18h30m29s
306 42.8'
7.9"
131.3
9 30.8'
-0 33.8'
13:03:02
Acamar
252 56.1'
S 40 14.0'
02h58m57s
179 35.8'
0"
342.2
-88 59.4'
-0 33.8'
21:31:31

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 = 56
Julian Date JD = 2458174.8957639
JD Ephemeris= 2458174.8968153
Sun-Earth distance = 0.99 AU = 148086145 km = 92016465 mi
Earth-Moon distance = 366862 km = 227958 mi
Earth-Venus distance = 1.67 AU = 249796179 km = 155216149 mi
Earth-Mars distance = 1.44 AU = 214921717 km = 133546163 mi
Earth-Jupiter distance = 5.1 AU = 763323502 km = 474307234 mi
Earth-Saturn distance = 10.53 AU = 1575214792 km = 978793093 mi
Day = 25.395763888889
UT = 9.4983333333333hours
deltaT=90.83972seconds
TD = 9.5235665888889
hours JD = 2458174.8957639
JDE= 2458174.8968153
t corrector = 0.060809130174322
corrected JDE= 2458174.8360061
DOY = 56
T (from JD) = 0.18151665335767
T (from JDE = 0.18151668214304
tau (from JDE) = 0.018151668214304
corrected taue = 0.018151501727978
SHA theta = 297.67492963048
nutation in longitude delta Rho = -11.532975788209
nutation of the ecliptic = -6.1116840241989 obliquity of the ecliptic = 23.435232945529
earth l = 156.73279974454
earth r = 0.98989388399294
earth b = 8.1721147701313E-5
222.97147278484
Lnot=335.20676042568
epsilon= 23.435232945529
alpha=338.46136160272 nutation in longitude=-11.532975788209
equation of time E=00:13:03