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I'll try to work this one manually later when I have more time, but
running it through Navigator I get: 

 14°12.1'N
145°24.1'E 

with the LOPs all advanced 1900 Local (0900 Z/UT).

BTW, thanks again for pushing my "knowledge envelope" - I couldn't
figure out how to advance LOPs in Navigator beyond the time that the
last one was taken (and entered on the Astronomical Position page). So
on a hunch I plugged in 1900 (ZT) for the Watch Time, selected "Auto
LOP Transport" and "To Selected Time", and hit "Calculate" again.
Seemed to work, because that's the time it gives for the resulting fix.


(Interesting little quirk: The Watch Time boxes were originally
greyed-out and I had to return to the Sextant Corrections page to
change it - but after doing that I can change it at will on any of the
pages, weird...).

Raw data output below (if anyone's interested).

--
GregR


LOPs transported to 05/07/2008 09:00:00 GMT
Speed= 14.2 Knts  Course= 180° T

Astronomical Position Calculation
#1 Arcturus-05/07/2008 08:51:13
#2 Spica-05/07/2008 08:52:51
#3 Sirius-05/07/2008 08:55:00
#4 Moon-05/07/2008 08:56:52
#5 Capella-05/07/2008 08:58:32

Crossings between LOPs: 10 crossings calculated
[1,2]: 14°06.5'N : 145°26.8'E
[1,3]: 13°52.1'N : 145°30.8'E
[1,4]: 14°18.0'N : 145°23.6'E
[1,5]: 14°17.4'N : 145°23.8'E
[2,3]: 14°00.9'N : 145°24.6'E
[2,4]: 16°25.4'N : 146°22.1'E
[2,5]: 14°29.3'N : 145°35.9'E
[3,4]: 14°08.5'N : 145°19.3'E
[3,5]: 14°11.1'N : 145°17.4'E
[4,5]: 14°16.6'N : 145°23.0'E

Angles between LOPs
LOPs 1 and 2: 36.2°
LOPs 1 and 3: 19.3°
LOPs 1 and 4: 39.1°
LOPs 1 and 5: 59.8°
LOPs 2 and 3: 55.5°
LOPs 2 and 4:  2.9°
LOPs 2 and 5: 23.6°
LOPs 3 and 4: 58.4°
LOPs 3 and 5: 79.1°
LOPs 4 and 5: 20.7°

Distances from AP to crossings:
LOPs 1 and 2:  6.2NM
LOPs 1 and 3: 21.1NM
LOPs 1 and 4:  5.9NM
LOPs 1 and 5:  5.3NM
LOPs 2 and 3: 11.3NM
LOPs 2 and 4: 144.4NM
LOPs 2 and 5: 20.6NM
LOPs 3 and 4:  6.0NM
LOPs 3 and 5:  6.6NM
LOPs 4 and 5:  4.6NM
Average Delta: 23.2NM
Standard Deviation: 40.8NM

------------

AP for LOPs 1,2,3,4,5
10 crossings calculated
05/07/2008 09:00:00 GMT
Lat: 14°12.1'N
Lon: 145°24.1'E





--- Anabasis  wrote:

> 
> 
> Exercise #10 Star Fix
> 
>   On 7 May 2008 a ship is steaming due South (180T) at 14.2 knots.  At
> startime, a round of stars and the moon was shot.  The 1900 DR
> (ZD-10)
> is 14 deg 11�N and Longitude is 145 deg 22�E.  Temp/Pressure is
83 F/
> 1010mb, Height of Eye is 106 ft, IE is 0.8� off the arc.  The
> following data was collected (Times in UTC):
> 
> Arcturus @ 08h 51m 13s Hs is 23 deg 10.4�
> 
> Spica @ 08h 52m 51s Hs is 28 deg 05.4�
> 
> Sirius @ 08h 55m 00s Hs is 37 deg 27.2�
> 
> Moon (LL) @ 08h 56m 52s Hs 19 deg  56.2�
> 
> Capella @ 08h 58m 32s  Hs 26 deg 49.2�
> 
> 
> Determine the 1900 ZT Running Star fix.  (Most probable position).
> 
> Jeremy
> 
> > 
> 


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