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SIGHT REDUCTION PAGE

Today's Date and GMT:
October 18, 2018    12:13:24

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):16:38:30

Sunrise (GMT): 11:08:22

Sunset (GMT): 22:08:02

GHA Aries: W 210 17.1'

Equation of Time: 14min51sec

More Results

GHA
Declination
RA
LHA
S.D.
Zn
Hc
Ho

Meridian

crossing

     SUN
7 03.6'
S 9 42.0'
13h32m54s
293 43.3'
16.1 '
113.3
10 48.1'
-0 17.7' 16:38:31
   MOON
253 25.4'
S 17 36.0'
21h07m27s
180 05.1'
14.8'
0.2
-66 24.3'
0 35.2' 00:13:03
  VENUS
357 28.6'
S 20 55.7'
14h11m14s
284 08.3'
29.4"
114.8
-3 38.7'
-0 33.3' 17:16:50
   MARS
253 01.8'
S 19 28.2'
21h09m01s
179 41.5'
6.7"
359.2
-68 16.4'
-0 33.6' 00:14:38
JUPITER
336 55.2'
S 18 26.2'
15h33m27s
263 34.9'
15.9"
100.1
-16 44.6'
-0 33.8' 18:39:04
SATURN
296 00.2'
S 22 46.3'
18h17m08s
222 39.9'
8"
76
-49 55.0'
-0 33.8'
21:22:44
Acamar
165 32.5'
S 40 13.8'
02h58m58s
92 12.2'
0"
238.5
-26 34.8'
-0 33.8'
06:04:35

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 = 291
Julian Date JD = 2458410.0093056
JD Ephemeris= 2458410.0103569
Sun-Earth distance = 1 AU = 149044059 km = 92611685 mi
Earth-Moon distance = 403915 km = 250981 mi
Earth-Venus distance = 0.28 AU = 42449728 km = 26377038 mi
Earth-Mars distance = 0.7 AU = 104474949 km = 64917723 mi
Earth-Jupiter distance = 6.21 AU = 928365531 km = 576859596 mi
Earth-Saturn distance = 10.38 AU = 1552529329 km = 964697000 mi
Day = 18.509305555556
UT = 12.223333333333hours
deltaT=90.83972seconds
TD = 12.248566588889
hours JD = 2458410.0093056
JDE= 2458410.0103569
t corrector = 0.059943738933748
corrected JDE= 2458409.9504132
DOY = 291
T (from JD) = 0.18795371130884
T (from JDE = 0.18795374009422
tau (from JDE) = 0.018795374009422
corrected taue = 0.018795209892409
SHA theta = 210.2889735857
nutation in longitude delta Rho = -15.686477650653
nutation of the ecliptic = -4.434559236209 obliquity of the ecliptic = 23.435615104893
earth l = 25.075984460361
earth r = 0.99629713789774
earth b = -2.1693981068193E-5
222.9804075303
Lnot=206.94580281541
epsilon= 23.435615104893
alpha=203.22543761331 nutation in longitude=-15.686477650653
equation of time E=00:14:51