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Unread 11-05-2015, 01:41 PM
southie southie is offline
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Effect of precession on declination of stars

Hi

I am hoping someone can help me with a bit of a puzzle I am trying to figure out.

I would like to know what the range of a stars declination would be from a certain latitude over the course of earth's precession cycle.

If one were to fast forward time for example, a star (Vega lets say) would appear to "bounce" up and down in the sky. As it is now I know Vega is located at +38deg 47min and in about 13727 years it will be at about +86deg. That gives a very rough range of about 48 degrees.

I would like to know how to go about working out what the full range of that stars declination would be.

Kind Regards....Southie

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Unread 11-05-2015, 02:47 PM
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JUPITERASC JUPITERASC is offline
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Re: Effect of precession on declination of stars

Quote:
Originally Posted by southie View Post

Hi

I am hoping someone can help me with a bit of a puzzle I am trying to figure out.

I would like to know what the range of a stars declination would be from a certain latitude over the course of earth's precession cycle.

If one were to fast forward time for example, a star (Vega lets say) would appear to "bounce" up and down in the sky.
As it is now I know Vega is located at +38deg 47min and in about 13727 years it will be at about +86deg.
That gives a very rough range of about 48 degrees.

I would like to know how to go about working out what the full range of that stars declination would be.

Kind Regards....Southie
Anne Wright's webpage has a display of Fixed Stars by DECLINATION with a 100 year timespan
at
CONSTELLATIONS OF WORDS
http://constellationsofwords.com/sta...clinations.htm

That would assist with estimating Fixed Stars Declination over greater spans of time

Other pages provide Latitude
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Unread 11-05-2015, 05:43 PM
southie southie is offline
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Re: Effect of precession on declination of stars

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Originally Posted by JUPITERASC View Post
Anne Wright's webpage has a display of Fixed Stars by DECLINATION with a 100 year timespan
at
CONSTELLATIONS OF WORDS
http://constellationsofwords.com/sta...clinations.htm

That would assist with estimating Fixed Stars Declination over greater spans of time

Other pages provide Latitude
Thank you for the information.
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  #4  
Unread 11-05-2015, 10:13 PM
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JUPITERASC JUPITERASC is offline
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Join Date: Jan 2008
Posts: 51,052
Re: Effect of precession on declination of stars

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Originally Posted by southie View Post

Thank you for the information.
That's ok, good that it is useful for you
__________________
http://www.youtube.com/watch?v=82p-D...eature=related Hippocrates Let food be your medicine: let medicine be your food. https://www.youtube.com/watch?v=cvz9uSK3zXo Rosencrantz & Guildenstern are Dead Tom Stoppard http://www.youtube.com/watch?v=KchhSIVwMdY Every exit is an entrance to somewhere else. VETTIUS VALENS FREE http://www.csus.edu/indiv/r/rileymt/...s%20entire.pdf
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