Nav home

SIGHT REDUCTION PAGE

Today's Date and GMT:
August 20, 2018    6:39:55

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):16:56:43

Sunrise (GMT): 10:07:49

Sunset (GMT): 23:44:55

GHA Aries: W 68 32.0'

Equation of Time: -3min27sec

More Results

GHA
Declination
RA
LHA
S.D.
Zn
Hc
Ho

Meridian

crossing

     SUN
279 07.0'
N 12 26.2'
09h57m40s
205 46.7'
15.8 '
29.8
-31 19.3'
-0 17.9' 16:56:48
   MOON
169 47.6'
S 19 11.8'
17h14m57s
96 27.3'
14.9'
259.3
-17 14.7'
0 35.8' 00:14:05
  VENUS
237 12.5'
S 6 51.1'
12h45m18s
163 52.2'
12.6"
332.9
-52 46.4'
-0 33.6' 19:44:26
   MARS
125 59.7'
S 26 27.8'
20h10m09s
52 39.4'
11.4"
225.8
6 36.7'
-0 33.4' 03:09:17
JUPITER
205 01.4'
S 15 41.1'
14h54m02s
131 41.1'
17.9"
286.9
-41 17.2'
-0 33.8' 21:53:10
SATURN
155 31.3'
S 22 39.7'
18h12m03s
82 11.0'
8.8"
247.8
-9 10.0'
-0 33.8'
01:11:11
Acamar
23 47.5'
S 40 13.8'
02h58m58s
310 27.2'
0"
144.4
-3 01.1'
-0 33.8'
09:58:06

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

RETURN

More Astronomical Info

Day of Year = 232
Julian Date JD = 2458350.7777199
JD Ephemeris= 2458350.7787713
Sun-Earth distance = 1.01 AU = 151374470 km = 94059735 mi
Earth-Moon distance = 400814 km = 249054 mi
Earth-Venus distance = 0.66 AU = 99402930 km = 61766117 mi
Earth-Mars distance = 0.41 AU = 61597768 km = 38275078 mi
Earth-Jupiter distance = 5.5 AU = 822158333 km = 510865504 mi
Earth-Saturn distance = 9.44 AU = 1412443038 km = 877651414 mi
Day = 20.277719907407
UT = 6.6652777777778hours
deltaT=90.83972seconds
TD = 6.6905110333333
hours JD = 2458350.7777199
JDE= 2458350.7787713
t corrector = 0.054534326243986
corrected JDE= 2458350.724237
DOY = 232
T (from JD) = 0.18633203887495
T (from JDE = 0.18633206766031
tau (from JDE) = 0.018633206766031
corrected taue = 0.018633057459183
SHA theta = 68.536683707498
nutation in longitude delta Rho = -13.292761042348
nutation of the ecliptic = -5.0241671235654 obliquity of the ecliptic = 23.435472413437
earth l = 327.22219443247
earth r = 1.0118749569165
earth b = -9.9247352647365E-5
222.97815659563
Lnot=148.56434660229
epsilon= 23.435472413437
alpha=149.41682821676 nutation in longitude=-13.292761042348
equation of time E=00:03:27