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Topic: Topocentric question
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MoonMystic Knowflake Posts: 1250 From: 🌛.🌜 Registered: Nov 2016
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posted February 17, 2018 04:28 PM
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Randall Webmaster Posts: 95902 From: From a galaxy, far, far away... Registered: Apr 2009
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posted February 18, 2018 04:53 PM
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Randall Webmaster Posts: 95902 From: From a galaxy, far, far away... Registered: Apr 2009
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posted March 04, 2018 04:22 PM
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SecretGeek Knowflake Posts: 1262 From: Dallas Registered: Nov 2013
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posted March 04, 2018 10:34 PM
It takes into consideration the altitude of a specific birth place. So if it were on Mount Everest, the angle to a body might deviate."Neglecting the altitude can result in an error of about 2 arc seconds with the moon and at an altitude 3000 m." http://www.astro.com/swisseph/swephprg.htm#_Toc505244884 IP: Logged |
Randall Webmaster Posts: 95902 From: From a galaxy, far, far away... Registered: Apr 2009
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posted March 05, 2018 09:02 AM
quote: Originally posted by SecretGeek: It takes into consideration the altitude of a specific birth place. So if it were on Mount Everest, the angle to a body might deviate."Neglecting the altitude can result in an error of about 2 arc seconds with the moon and at an altitude 3000 m." http://www.astro.com/swisseph/swephprg.htm#_Toc505244884
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Randall Webmaster Posts: 95902 From: From a galaxy, far, far away... Registered: Apr 2009
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posted March 06, 2018 10:24 AM
Interesting concept.IP: Logged |
MoonMystic Knowflake Posts: 1250 From: 🌛.🌜 Registered: Nov 2016
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posted March 06, 2018 12:17 PM
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Kannon McAfee Moderator Posts: 3354 From: Portland, OR - USA Registered: Oct 2011
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posted March 12, 2018 02:17 AM
quote: Originally posted by MoonMystic: I keep seeing the box but until just now never tried it. The only difference I could see was my Moon was nudged slightly fwd. Anyone know anything about this option and how it might be of use? Thanks!
In no way is this a 'beginner' level question, but okay ... Topocentric is a fine tuning of geocentric. It compensates for the parallax Moon effect, which is why the difference is most noticeable for the Moon. Normally the Moon is measured mid-geocenter with a line through the center of the Moon. With topocentric the Moon's position is measured from the locale (birth place). It can change the angle of the line through the Moon's center, thus its position relative to the equinoxes/tropical zodiac. This is far more important than anything written there about altitude, which is basically insignificant. The difference we're talking about with the Moon's position is minutes of arc, even a degree or more, not mere seconds of arc. People who use this system say it is more accurate. I agree it 'should' be more accurate, but I cannot yet verify that it actually is in the dynamics of radix or progressions. ------------------ Soul Stars Astrology - by the declinations guy Declinations: because the planets move north and south of the celestial equator IP: Logged |
Randall Webmaster Posts: 95902 From: From a galaxy, far, far away... Registered: Apr 2009
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posted April 03, 2018 10:36 AM
Thanks, Kannon!IP: Logged |
Randall Webmaster Posts: 95902 From: From a galaxy, far, far away... Registered: Apr 2009
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posted April 04, 2018 08:37 AM
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Randall Webmaster Posts: 95902 From: From a galaxy, far, far away... Registered: Apr 2009
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posted May 09, 2018 02:05 PM
quote: Originally posted by Kannon McAfee: In no way is this a 'beginner' level question, but okay ...Topocentric is a fine tuning of geocentric. It compensates for the parallax Moon effect, which is why the difference is most noticeable for the Moon. Normally the Moon is measured mid-geocenter with a line through the center of the Moon. With topocentric the Moon's position is measured from the locale (birth place). It can change the angle of the line through the Moon's center, thus its position relative to the equinoxes/tropical zodiac. This is far more important than anything written there about altitude, which is basically insignificant. The difference we're talking about with the Moon's position is minutes of arc, even a degree or more, not mere seconds of arc. People who use this system say it is more accurate. I agree it 'should' be more accurate, but I cannot yet verify that it actually is in the dynamics of radix or progressions.
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Randall Webmaster Posts: 95902 From: From a galaxy, far, far away... Registered: Apr 2009
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posted May 24, 2018 07:17 AM
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