Celestial Ephemeris Pole - Revision history

Carlos.Lopez at 11:25, 23 February 2012

2012-02-23T11:25:48Z

← Older revision		Revision as of 11:25, 23 February 2012
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	\|Level=Basic		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011
	~~\|Logo=gAGE~~
	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	}}		}}

Jaume.Sanz at 11:27, 8 February 2012

2012-02-08T11:27:44Z

← Older revision		Revision as of 11:27, 8 February 2012
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	This is also a quasi-inertial system, like the [[Conventional Celestial Reference System]] (CRS). The difference between the two systems is that the pole of this one is the true one (i.e., instantaneous earth's rotation axis). Its origin is the Earth's centre of mass, its fundamental plane is the one defined by the true pole, therefore is the true equator, and its principal direction is toward the true vernal equinox (i.e., the intersection between the mean ecliptic plane and the true equator plane).		This is also a quasi-inertial system, like the [[Conventional Celestial Reference System]] (CRS). The difference between the two systems is that the pole of this one is the true one (i.e., instantaneous earth's rotation axis). Its origin is the Earth's centre of mass, its fundamental plane is the one defined by the true pole, therefore is the true equator, and its principal direction is toward the true vernal equinox (i.e., the intersection between the mean ecliptic plane and the true equator plane).

	If all external forces were null, ''Celestial Ephemeris Pole'' (CEP) would be a fixed pole in Space (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.		If all external forces were null, Celestial Ephemeris Pole (CEP) would be a fixed pole in Space (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.

	The International Astronomical Union (IAU) resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the ''Celestial Intermediate Pole'' (CIP). The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32. IERS Convention Center, Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.		The International Astronomical Union (IAU) resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the Celestial Intermediate Pole(CIP). ''The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain'' [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32. IERS Convention Center, Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.

Jaume.Sanz at 13:12, 26 January 2012

2012-01-26T13:12:45Z

← Older revision		Revision as of 13:12, 26 January 2012
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	If all external forces were null, ''Celestial Ephemeris Pole'' (CEP) would be a fixed pole in Space (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.		If all external forces were null, ''Celestial Ephemeris Pole'' (CEP) would be a fixed pole in Space (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.

	The International Astronomical Union (IAU) resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the ''Celestial Intermediate Pole'' (CIP). The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32.. IERS Convention Center., Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.		The International Astronomical Union (IAU) resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the ''Celestial Intermediate Pole'' (CIP). The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32. IERS Convention Center, Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.

Jaume.Sanz at 13:02, 26 January 2012

2012-01-26T13:02:02Z

← Older revision		Revision as of 13:02, 26 January 2012
Line 11:		Line 11:
	If all external forces were null, ''Celestial Ephemeris Pole'' (CEP) would be a fixed pole in Space (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.		If all external forces were null, ''Celestial Ephemeris Pole'' (CEP) would be a fixed pole in Space (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.

	IAU resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the ''Celestial Intermediate Pole'' (CIP). The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32.. IERS Convention Center., Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.		The International Astronomical Union (IAU) resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the ''Celestial Intermediate Pole'' (CIP). The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32.. IERS Convention Center., Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.

Jaume.Sanz at 12:06, 26 January 2012

2012-01-26T12:06:16Z

← Older revision		Revision as of 12:06, 26 January 2012
Line 9:		Line 9:
	This is also a quasi-inertial system, like the [[Conventional Celestial Reference System]] (CRS). The difference between the two systems is that the pole of this one is the true one (i.e., instantaneous earth's rotation axis). Its origin is the Earth's centre of mass, its fundamental plane is the one defined by the true pole, therefore is the true equator, and its principal direction is toward the true vernal equinox (i.e., the intersection between the mean ecliptic plane and the true equator plane).		This is also a quasi-inertial system, like the [[Conventional Celestial Reference System]] (CRS). The difference between the two systems is that the pole of this one is the true one (i.e., instantaneous earth's rotation axis). Its origin is the Earth's centre of mass, its fundamental plane is the one defined by the true pole, therefore is the true equator, and its principal direction is toward the true vernal equinox (i.e., the intersection between the mean ecliptic plane and the true equator plane).

	If all external forces were null, ''Celestial Ephemeris Pole'' (CEP) would be a fixed pole in ~~space~~ (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.		If all external forces were null, ''Celestial Ephemeris Pole'' (CEP) would be a fixed pole in Space (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.

	IAU resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the ''Celestial Intermediate Pole'' (CIP). The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32.. IERS Convention Center., Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.		IAU resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the ''Celestial Intermediate Pole'' (CIP). The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32.. IERS Convention Center., Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.

Jaume.Sanz at 09:30, 26 January 2012

2012-01-26T09:30:59Z

← Older revision		Revision as of 09:30, 26 January 2012
Line 1:		Line 1:
	{{Article Infobox2		{{Article Infobox2
	\|Category=Fundamentals		\|Category=Fundamentals
	~~\|Title={{PAGENAME}}~~		\|Authors=J. Sanz Subirana, J.M. Juan Zornoza and M. Hernández-Pajares, Technical University of Catalonia, Spain.
	\|Authors= J. Sanz Subirana, JM. Juan Zornoza and M. ~~Hernandez~~-Pajares, University of ~~Catalunia~~, Spain.
	\|Level=Basic		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011
	\|Logo=gAGE		\|Logo=gAGE
			\|Title={{PAGENAME}}
	}}		}}
			This is also a quasi-inertial system, like the [[Conventional Celestial Reference System]] (CRS). The difference between the two systems is that the pole of this one is the true one (i.e., instantaneous earth's rotation axis). Its origin is the Earth's centre of mass, its fundamental plane is the one defined by the true pole, therefore is the true equator, and its principal direction is toward the true vernal equinox (i.e., the intersection between the mean ecliptic plane and the true equator plane).

	This is also a quasi-inertial system, like the [[Conventional Celestial Reference System\|CRS]]. The difference between the two systems is that the pole of this one is the true one (i.e., instantaneous earth's rotation axis). Its origin is the Earth's centre of mass, its fundamental plane is the one defined by the true pole, therefore is the true equator, and its principal direction is toward the true vernal equinox (i.e., the intersection between the mean ecliptic plane and the true equator plane).		If all external forces were null, ''Celestial Ephemeris Pole'' (CEP) would be a fixed pole in space (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.

	If all external forces were null, ''Celestial Ephemeris Pole'' (CEP would be a fixed pole in space (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.

	IAU resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the ''Celestial Intermediate Pole'' (CIP). The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32.. IERS Convention Center., Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.		IAU resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the ''Celestial Intermediate Pole'' (CIP). The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32.. IERS Convention Center., Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.

Carlos.Lopez at 10:09, 28 October 2011

2011-10-28T10:09:40Z

← Older revision		Revision as of 10:09, 28 October 2011
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	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	\|Authors= J. Sanz Subirana, JM. Juan Zornoza and M. Hernandez-Pajares, University of Catalunia, Spain.		\|Authors= J. Sanz Subirana, JM. Juan Zornoza and M. Hernandez-Pajares, University of Catalunia, Spain.
	\|Level=~~Medium~~		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011
	\|Logo=gAGE		\|Logo=gAGE

Carlos.Lopez at 08:46, 9 August 2011

2011-08-09T08:46:28Z

← Older revision		Revision as of 08:46, 9 August 2011
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	[[Category:Fundamentals]]		[[Category:Fundamentals]]
			[[Category:GNSS Time Reference, Coordinate Frames and Orbits]]
			[[Category:Coordinate Systems]]

Carlos.Lopez at 12:48, 8 August 2011

2011-08-08T12:48:52Z

← Older revision		Revision as of 12:48, 8 August 2011
Line 8:		Line 8:
	}}		}}

	This is also a quasi-inertial system, like the [[Conventional Celestial Reference System\|CRS]]. The difference between the two systems is that the pole of this one is the true one (i.e., instantaneous earth's rotation axis). Its ~~Origin~~ is the ~~earth~~'s ~~Centre~~ of ~~Mass~~, its fundamental plane is the one defined by the true pole, therefore is the true equator, and its principal direction is toward the true vernal equinox (i.e., the intersection between the mean ecliptic plane and the true equator plane).		This is also a quasi-inertial system, like the [[Conventional Celestial Reference System\|CRS]]. The difference between the two systems is that the pole of this one is the true one (i.e., instantaneous earth's rotation axis). Its origin is the Earth's centre of mass, its fundamental plane is the one defined by the true pole, therefore is the true equator, and its principal direction is toward the true vernal equinox (i.e., the intersection between the mean ecliptic plane and the true equator plane).

	If all external forces were null, Celestial Ephemeris Pole (CEP would be a fixed pole in ~~Space~~ (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.		If all external forces were null, ''Celestial Ephemeris Pole'' (CEP would be a fixed pole in space (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.

	IAU resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the Celestial Intermediate Pole (CIP). The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32.. IERS Convention Center., Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.		IAU resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the ''Celestial Intermediate Pole'' (CIP). The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32.. IERS Convention Center., Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.

Carlos.Lopez: Created page with "{{Article Infobox2 |Category=Fundamentals |Title={{PAGENAME}} |Authors= J. Sanz Subirana, JM. Juan Zornoza and M. Hernandez-Pajares, University of Catalunia, Spain. |Level=Medium..."

2011-07-27T13:02:36Z

Created page with "{{Article Infobox2 |Category=Fundamentals |Title={{PAGENAME}} |Authors= J. Sanz Subirana, JM. Juan Zornoza and M. Hernandez-Pajares, University of Catalunia, Spain. |Level=Medium..."

New page

{{Article Infobox2
|Category=Fundamentals
|Title={{PAGENAME}}
|Authors= J. Sanz Subirana, JM. Juan Zornoza and M. Hernandez-Pajares, University of Catalunia, Spain.
|Level=Medium
|YearOfPublication=2011
|Logo=gAGE
}}

This is also a quasi-inertial system, like the [[Conventional Celestial Reference System|CRS]]. The difference between the two systems is that the pole of this one is the true one (i.e., instantaneous earth's rotation axis). Its Origin is the earth's Centre of Mass, its fundamental plane is the one defined by the true pole, therefore is the true equator, and its principal direction is toward the true vernal equinox (i.e., the intersection between the mean ecliptic plane and the true equator plane).

If all external forces were null, Celestial Ephemeris Pole (CEP would be a fixed pole in Space (i.e., it would not precess or nutate). Nevertheless the position of CEP relative to the earth's crust would change due to the irregular mass distribution of the earth and its variation. But, if the earth were spherical and homogeneous, it would be a fixed pole in Space, whatever the external forces be null of not, and also on the earth's surface. This pole is a suitable reference for the external observer.

IAU resolution B1.7 recommended that after 1 January 2003, the CEP be replaced by the Celestial Intermediate Pole (CIP). The CIP definition is an extension of that of the CEP in high frequency domain and coincides with that of the CEP in the low frequency domain [Denis et al., 2004] <ref> [Denis et al., 2004] Denis, D., McCarthy and Petit, G., 2004. IERS Conventions (2003). IERS Technical Note 32.. IERS Convention Center., Frankfurt am Main.</ref>. It is consistent with the IAU2000A model for precession and nutation.

==References==
<references/>

[[Category:Fundamentals]]