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SIGHT REDUCTION PAGE

Today's Date and GMT:
December 15, 2018    12:20:29

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):16:48:35

Sunrise (GMT): 12:11:46

Sunset (GMT): 21:25:18

GHA Aries: W 269 13.7'

Equation of Time: 4min53sec

More Results

GHA
Declination
RA
LHA
S.D.
Zn
Hc
Ho

Meridian

crossing

     SUN
6 20.4'
S 23 16.5'
17h31m33s
293 00.1'
16.3 '
122.3
0 33.9'
-0 17.5' 16:48:28
   MOON
273 16.0'
S 6 29.7'
23h43m51s
199 55.7'
14.9'
32.6
-51 01.3'
0 36.0' 23:00:46
  VENUS
51 58.6'
S 11 41.7'
14h29m00s
338 38.3'
16.3"
154.7
33 33.3'
-0 33.5' 13:45:55
   MARS
279 06.8'
S 5 02.0'
23h20m28s
205 46.5'
4.2"
39.5
-47 07.2'
-0 33.7' 22:37:23
JUPITER
22 39.3'
S 21 02.6'
16h26m18s
309 19.0'
15.6"
132.4
12 02.0'
-0 33.8' 15:43:13
SATURN
348 59.3'
S 22 35.8'
18h40m58s
275 39.0'
7.6"
110.8
-10 38.5'
-0 33.8'
17:57:53
Acamar
224 29.0'
S 40 13.8'
02h58m59s
151 08.7'
0"
262.9
-68 12.4'
-0 33.8'
02:15:54

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 = 349
Julian Date JD = 2458468.0142245
JD Ephemeris= 2458468.0152759
Sun-Earth distance = 0.98 AU = 147238688 km = 91489879 mi
Earth-Moon distance = 399720 km = 248375 mi
Earth-Venus distance = 0.51 AU = 76485667 km = 47525990 mi
Earth-Mars distance = 1.12 AU = 168245370 km = 104542826 mi
Earth-Jupiter distance = 6.3 AU = 942156879 km = 585429143 mi
Earth-Saturn distance = 11 AU = 1646058667 km = 1022813436 mi
Day = 15.514224537037
UT = 12.341388888889hours
deltaT=90.83972seconds
TD = 12.366622144444
hours JD = 2458468.0142245
JDE= 2458468.0152759
t corrector = 0.063550924060609
corrected JDE= 2458467.951725
DOY = 349
T (from JD) = 0.18954179943976
T (from JDE = 0.18954182822512
tau (from JDE) = 0.018954182822512
corrected taue = 0.018954008829565
SHA theta = 269.23220289592
nutation in longitude delta Rho = -15.558208571529
nutation of the ecliptic = -4.7910463249188 obliquity of the ecliptic = 23.435495428927
earth l = 83.47867153273
earth r = 0.98422898778083
earth b = 2.4775446856726E-5
222.98261186573
Lnot=264.11819826417
epsilon= 23.435495428927
alpha=262.88707959671 nutation in longitude=-15.558208571529
equation of time E=00:04:53