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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: In Honor Of Jeremy Two Stars Full Lan's : One Upper And One Lower Culmination
From: Peter Hakel
Date: 2009 Sep 20, 20:28 -0700
This is in the South Atlantic Ocean, roughly halfway between South Georgia and Tristan da Cunha.
Peter Hakel
*******
RIGIL KENT
This one is my favorite ... and I had the opportunity to prepare it well in ahead of time with the adequate instrument.
Date 29 June 1981
Course 065° , Speed 18.0 Kts , Sea Current towards true direction of 095° at speed 2.5 kts
Height of Eye 25 Feet, Pressure 1026.5 Mb and Temperature +4°C (I remember that Warm clothes were much appreciated)
RIGIL KENT was at the SOUTH of the Vessel at its LOWER Culmination
The following data were then published in the French "Ephemerides Nautiques"
BODY : RIGIL KENT
Verse Ascension : 140°24.8'
Declination : S60°45'7
Greenwhich Hour Angle of Aries at 08h00m00.0s was 037°19'0
All Heights already corrected for Instrument and Index Error. All times in UT
# 1 - 08h15m00s0 20°05.5'
# 2 - 08h30m00.0s 19°43.9'
# 3 - 08h42m00.0s 19°30.4'
# 4 - 08h55m01.0s 19°19.7'
# 5 - 08h59m34.0s 19°16.9'
# 6 - 09h03m12.0s 19°15.0'
# 7 - 09h12m42.0s 19°11.6'
# 8 - 09h17m53.0s 19°10.6'
# 9 - 09h23m47.0s 19°10.3'
#10 - 09h26m24.0s 19°10.4'
#11 - 09h30m00.0s 19°10.9'
#12 - 09h45m00.0s 19°16'1
#13 - 10h00m00.0s 19°26'7
#14 - 10h15m00.0s 19°42'7
#15 - 10h30m00.0s 20°04'0
Give RIGIL KENT Transit time, i.e. RIGIL KENT being true South of moving vessel and vessel's position at time UT 09h30m00.0s . Any indication on FIX confidence is welcome.
*******
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From: Peter Hakel
Date: 2009 Sep 20, 20:28 -0700
LAN UT: 09:28:08
Vessel position at 09:30:00 UT
S 48 deg 32.2'
W 19 deg 48.5'
Vessel position at 09:30:00 UT
S 48 deg 32.2'
W 19 deg 48.5'
This is in the South Atlantic Ocean, roughly halfway between South Georgia and Tristan da Cunha.
Peter Hakel
*******
RIGIL KENT
This one is my favorite ... and I had the opportunity to prepare it well in ahead of time with the adequate instrument.
Date 29 June 1981
Course 065° , Speed 18.0 Kts , Sea Current towards true direction of 095° at speed 2.5 kts
Height of Eye 25 Feet, Pressure 1026.5 Mb and Temperature +4°C (I remember that Warm clothes were much appreciated)
RIGIL KENT was at the SOUTH of the Vessel at its LOWER Culmination
The following data were then published in the French "Ephemerides Nautiques"
BODY : RIGIL KENT
Verse Ascension : 140°24.8'
Declination : S60°45'7
Greenwhich Hour Angle of Aries at 08h00m00.0s was 037°19'0
All Heights already corrected for Instrument and Index Error. All times in UT
# 1 - 08h15m00s0 20°05.5'
# 2 - 08h30m00.0s 19°43.9'
# 3 - 08h42m00.0s 19°30.4'
# 4 - 08h55m01.0s 19°19.7'
# 5 - 08h59m34.0s 19°16.9'
# 6 - 09h03m12.0s 19°15.0'
# 7 - 09h12m42.0s 19°11.6'
# 8 - 09h17m53.0s 19°10.6'
# 9 - 09h23m47.0s 19°10.3'
#10 - 09h26m24.0s 19°10.4'
#11 - 09h30m00.0s 19°10.9'
#12 - 09h45m00.0s 19°16'1
#13 - 10h00m00.0s 19°26'7
#14 - 10h15m00.0s 19°42'7
#15 - 10h30m00.0s 20°04'0
Give RIGIL KENT Transit time, i.e. RIGIL KENT being true South of moving vessel and vessel's position at time UT 09h30m00.0s . Any indication on FIX confidence is welcome.
*******
--~--~---------~--~----~------------~-------~--~----~
NavList message boards: www.fer3.com/arc
Or post by email to: NavList@fer3.com
To , email NavList-@fer3.com
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