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SIGHT REDUCTION PAGE

Today's Date and GMT:
January 16, 2021    3:24:27

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):41:03:17

Sunrise (GMT): 12:16:02

Sunset (GMT): 21:50:52

GHA Aries: W 166 54.1'

Equation of Time: -9min43sec

More Results

GHA
Declination
RA
LHA
S.D.
Zn
Hc
Ho

Meridian

crossing

     SUN
228 41.0'
S 20 54.4'
19h52m52s
155 20.7'
16.3 '
306.7
-60 54.7'
-0 17.4' 17:03:04
   MOON
190 18.8'
S 15 06.3'
22h26m21s
116 58.5'
15.4'
276.1
-30 04.7'
0 38.1' 19:36:32
  VENUS
246 41.2'
S 23 05.4'
18h40m51s
173 20.9'
5.2"
340.8
-71 03.3'
-0 33.7' 15:51:03
   MARS
135 10.2'
N 14 01.9'
02h06m56s
61 49.9'
4.5"
262.1
30 17.1'
-0 33.6' 23:17:07
JUPITER
218 05.1'
S 19 11.2'
20h35m16s
144 44.8'
16.3"
295.6
-52 49.5'
-0 33.8' 17:45:27
SATURN
221 06.5'
S 19 47.3'
20h23m10s
147 46.2'
7.6"
298.2
-55 16.6'
-0 33.8'
17:33:22
Acamar
122 08.2'
S 40 13.3'
02h59m04s
48 47.9'
0"
215.1
-2 41.1'
-0 33.8'
00:09:15

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 = 16
Julian Date JD = 2459230.6419792
JD Ephemeris= 2459230.6430822
Sun-Earth distance = 0.98 AU = 147161292 km = 91441787 mi
Earth-Moon distance = 387764 km = 240945 mi
Earth-Venus distance = 1.61 AU = 240787618 km = 149618489 mi
Earth-Mars distance = 1.04 AU = 155477370 km = 96609158 mi
Earth-Jupiter distance = 6.06 AU = 905989350 km = 562955682 mi
Earth-Saturn distance = 10.96 AU = 1639552207 km = 1018770509 mi
Day = 16.141979166667
UT = 3.4075hours
deltaT=95.30573seconds
TD = 3.4339738138889
hours JD = 2459230.6419792
JDE= 2459230.6430822
t corrector = 0.063298805632486
corrected JDE= 2459230.5797834
DOY = 16
T (from JD) = 0.21042140942277
T (from JDE = 0.21042143962334
tau (from JDE) = 0.021042143962334
corrected taue = 0.021041970659649
SHA theta = 166.90591059765
nutation in longitude delta Rho = -15.499638515194
nutation of the ecliptic = 1.6734080698688 obliquity of the ecliptic = 23.437019588651
earth l = 116.22296960731
earth r = 0.98371162595558
earth b = 0.00015591313409587
223.01159522686
Lnot=295.80028483718
epsilon= 23.437019588651
alpha=298.21853685828 nutation in longitude=-15.499638515194
equation of time E=00:09:43