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SIGHT REDUCTION PAGE

Today's Date and GMT:
January 27, 2020    7:00:22

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):41:06:03

Sunrise (GMT): 12:09:20

Sunset (GMT): 22:03:12

GHA Aries: W 231 07.4'

Equation of Time: -12min35sec

More Results

GHA
Declination
RA
LHA
S.D.
Zn
Hc
Ho

Meridian

crossing

     SUN
281 56.6'
S 18 34.4'
20h36m43s
208 36.3'
16.2 '
55.8
-56 43.3'
-0 17.5' 17:05:57
   MOON
253 56.2'
S 14 09.5'
22h28m45s
180 35.9'
14.9'
1.3
-62 57.4'
0 35.6' 18:57:58
  VENUS
243 17.8'
S 6 25.8'
23h11m18s
169 57.5'
7.4"
342.8
-54 06.0'
-0 33.7' 19:40:31
   MARS
336 07.2'
S 22 39.0'
17h00m01s
262 46.9'
2.4"
103.1
-19 55.9'
-0 33.7' 13:29:14
JUPITER
307 23.7'
S 22 47.3'
18h54m55s
234 03.4'
16.1"
85
-41 28.6'
-0 33.8' 15:24:08
SATURN
294 43.0'
S 21 11.9'
19h45m38s
221 22.7'
7.6"
73
-49 52.2'
-0 33.8'
16:14:51
Acamar
186 22.1'
S 40 13.5'
02h59m01s
113 01.8'
0"
247.6
-40 32.9'
-0 33.8'
23:28:15

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 = 27
Julian Date JD = 2458875.7919213
JD Ephemeris= 2458875.7930071
Sun-Earth distance = 0.98 AU = 147298801 km = 91527232 mi
Earth-Moon distance = 402097 km = 249852 mi
Earth-Venus distance = 1.12 AU = 167542060 km = 104105809 mi
Earth-Mars distance = 1.99 AU = 297022965 km = 184561514 mi
Earth-Jupiter distance = 6.1 AU = 912677420 km = 567111457 mi
Earth-Saturn distance = 10.99 AU = 1644351246 km = 1021752494 mi
Day = 27.291921296296
UT = 7.0061111111111hours
deltaT=93.812seconds
TD = 7.03217
hours JD = 2458875.7919213
JDE= 2458875.7930071
t corrector = 0.063482021696555
corrected JDE= 2458875.7295251
DOY = 27
T (from JD) = 0.20070614432022
T (from JDE = 0.20070617404745
tau (from JDE) = 0.020070617404745
corrected taue = 0.020070443600442
SHA theta = 231.12805065932
nutation in longitude delta Rho = -15.679119883793
nutation of the ecliptic = -1.1302134780599 obliquity of the ecliptic = 23.436367143854
earth l = 126.79885503799
earth r = 0.98463081870439
earth b = 7.1610534652504E-5
222.99810893382
Lnot=306.04324381279
epsilon= 23.436367143854
alpha=309.18092876793 nutation in longitude=-15.679119883793
equation of time E=00:12:35