Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: In Honor Of Jeremy Two Stars Full Lan's : One Upper And One Lower Culmination
    From: Peter Hakel
    Date: 2009 Sep 22, 18:00 -0700


    From: "antoine.m.couette{at}club-internet.fr" <antoine.m.couette{at}club-internet.fr>
    To: NavList@fer3.com
    Sent: Monday, September 21, 2009 2:34:24 AM
    Subject: [NavList 9834] Re: IN HONOR OF JEREMY TWO STARS FULL LAN's : ONE UPPER and ONE LOWER CULMINATION

    RIGIL KENT

    Transit time at 09h17m52.3s (R KENT exactly south of moving vessel)

    Position at 09:30.0 UT is S4815.7W01709.4 while we had an other independent FIX off 1.4 NM from Astronomical FIX. Our confidence for this Astronomical Fix was a Latitude error of 0.3' and a Longitude error of 3.8' (3 SIGMA values).

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

    Hello Antoine,

    For this example my rapid-fire program gives the same fix as yours:

    S   48 deg 15.7'  +/- 0.1'
    W  17 deg 09.4'  +/- 3.1'

    and are followed by 1-sigma standard deviations.

    As before, I used my meridian-transit fix for AP.  I also send the the input data file (Toward = positive, Away = negative).  The Ho's are entered in decimal form, hence the arcminutes' column data are set to zero throughout.


    Peter Hakel



    Time of fix (UT hours, minutes, seconds):
    9 30 0

    Assumed position:
    Latitude (degrees, minutes)
     -48 -15.7
    Longitude (degrees, minutes)
     -17  -8.8

    Course (degrees, true)
    68.5

    Speed (knots):
    20.2

    Number of observations:
    15

    UT           Ho         Intercept Azimuth
     h m  s      d  m       nm (T=+)  d (true)
     8 15 00     19.965 0  +12.5      188.1
     8 30 00     19.603 0   +9.3      186.1
     8 42 00     19.378 0   +7.1      184.6
     8 55 01     19.200 0   +4.9      182.9
     8 59 34     19.153 0   +4.2      182.3
     9 03 12     19.122 0   +3.6      181.8
     9 12 42     19.063 0   +2.1      180.6
     9 17 53     19.047 0   +1.4      180.0
     9 23 47     19.042 0   +0.7      179.2
     9 26 24     19.043 0   +0.3      178.8
     9 30 00     19.052 0   -0.1      178.4
     9 45 00     19.140 0   -1.6      176.4
    10 00 00     19.317 0   -2.8      174.5
    10 15 00     19.583 0   -3.8      172.6
    10 30 00     19.940 0   -4.2      170.7



    --~--~---------~--~----~------------~-------~--~----~
    NavList message boards: www.fer3.com/arc
    Or post by email to: NavList@fer3.com
    To unsubscribe, email NavList-unsubscribe@fer3.com
    -~----------~----~----~----~------~----~------~--~---

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site