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Old 20-January-2009, 04:36 PM
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Default Why is it that when a new big KBO is announced...

The only people on top of it are the astrologers? You'd think 2007 OR10 would be bigger news among astrogeeks, but no, it's astrology all the way. I still can't find who discovered it. Does anyone know?
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Old 20-January-2009, 04:46 PM
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What is 2007 OR10?
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Old 20-January-2009, 04:47 PM
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Y'see, for astrogeeks it's just another rock.

For astrologers, it means they have to recalculate all their astrological tables. That's a huge hassle.
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Old 20-January-2009, 04:47 PM
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Never mind.

http://en.wikipedia.org/wiki/2007_OR10
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Old 20-January-2009, 05:56 PM
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[Snip!] For astrologers, it means they have to recalculate all their astrological tables. That's a huge hassle.
Nah, they'll just do what they've always done -- make something up as they go along.
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Old 20-January-2009, 09:25 PM
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I'm kind of curious now. I'll have to go investigate what Astrologers are going to do with the KBOs. They all spend 20 to 50 years per sign, and are retrograde almost half the time. Quite a few go way outside the ecliptic, straying from the usual twelve signs... and there could be hundreds of them. I wonder how they process all of this.
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Old 20-January-2009, 10:20 PM
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It's kind of amusing actually.
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Old 21-January-2009, 12:13 AM
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Originally Posted by parallaxicality View Post
2007 OR10 […] I still can't find who discovered it. Does anyone know?
Looking at the database:

2007 OR10 2007 07 17 675 M. E. Schwamb, M. E. Brown, D. Rabinowitz
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Old 21-January-2009, 09:35 AM
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How does this thing have a magnitude of 1.9 (from the Wiki)? Isn't that almost as bright as Mars?

Edit: actually I see they said "absolute magnitude" which makes even less sense. Isn't that calculated as it would appear at 10 Ly or something?

- J
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Old 21-January-2009, 11:54 AM
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How does this thing have a magnitude of 1.9 (from the Wiki)? Isn't that almost as bright as Mars?

Edit: actually I see they said "absolute magnitude" which makes even less sense. Isn't that calculated as it would appear at 10 Ly or something?
There's a separate absolute magnitude scale for solar system objects, corresponding to how bright they'd look from the Sun if their distance from same was 1 AU.
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Old 21-January-2009, 01:20 PM
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You know what would be funny.
What if in a thousand years after our civilisation collapses (any reason really) the only people who have the real and complete list of objects in the solar system are Astrologers.
The reason being they carefully collected all the scientific data and incorporated it into their charts. This would make a nice sci-fi movie plot.
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Old 21-January-2009, 01:50 PM
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You know what would be funny.
What if in a thousand years after our civilisation collapses (any reason really) the only people who have the real and complete list of objects in the solar system are Astrologers.
The reason being they carefully collected all the scientific data and incorporated it into their charts. This would make a nice sci-fi movie plot.
Highly unlikely. There are currently more than 100,000 numbered objects in the main and Kuiper asteroid belts. The only scientific data that astrologers ever use is the positional data -- and only one-third of that, the ecliptic longitude, they throw away the latitude and distance coordinates.

Of what possible value can astrology be if it throws away two-thirds of its data from the start?
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Old 21-January-2009, 02:30 PM
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Highly unlikely. There are currently more than 100,000 numbered objects in the main and Kuiper asteroid belts......
Eish!
I was having meself a nice little fantasy until you came with all your facts and science.

Quote:
Of what possible value can astrology be if it throws away two-thirds of its data from the start?
I wasn't really suggesting that we should look up to Astrologers to be our "data keepers", I was actually trying to be funny (haha funny).
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Old 21-January-2009, 03:07 PM
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... I was actually trying to be funny (haha funny).
*I* thought it was funny!
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Old 21-January-2009, 04:02 PM
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It makes me wonder. What if there really is a Planet X out there we can't see?

Yet.
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Old 21-January-2009, 04:05 PM
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There was. It was Charon all along.
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Old 21-January-2009, 04:16 PM
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What if there really is a Planet X out there we can't see? ... Yet.
If it gets seen, it will keep astrologers very busy recalculating for a while.
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Old 21-January-2009, 04:26 PM
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Eish! I was having meself a nice little fantasy until you came with all your facts and science.
Glad to be of service!
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I wasn't really suggesting that we should look up to astrologers to be our "data keepers", I was actually trying to be funny (haha funny).
It may still be amusing as a movie plot, or as a scenario for a movie. Let's not forget that many things much less plausible than this have been made into big box-office movies!
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Old 21-January-2009, 04:28 PM
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Of what possible value can astrology be if it throws away two-thirds of its data from the start?
Teaching how to avoid to collapse beneath a burden of thinking ?
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Old 21-January-2009, 06:22 PM
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Teaching how to avoid to collapse beneath a burden of thinking ?
Perhaps!

But then, why not go all the way and resort to phrenology, cheiromancy, cartomancy, any of the other -omancies and not be burdened by thinking at all?
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Old 21-January-2009, 08:08 PM
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why not go all the way and resort to phrenology, cheiromancy, cartomancy, any of the other -omancies and not be burdened by thinking at all?
I was always a fan of spatulomancy, but these days it's difficult to get a good goat for every question I need an answer to.
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Old 21-January-2009, 08:51 PM
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Well at least they have another exuse for why they usually get it wrong. But come to think of it, if they usually get it wrong because they dont have all necessary heavenly bodies in their calculations then they dont have much hope of ever getting it all straightend out. Oh Dear what will they do!
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Old 22-January-2009, 06:26 AM
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It may still be amusing as a movie plot, or as a scenario for a movie. Let's not forget that many things much less plausible than this have been made into big box-office movies!
Oh, you loved me, you really really loved.
I'm going to be rich! Hollywoood here I come (I have a big fat script in hand).
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Old 22-January-2009, 02:11 PM
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I was always a fan of spatulomancy, but these days it's difficult to get a good goat for every question I need an answer to.
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why not go all the way and resort to phrenology, cheiromancy, cartomancy, any of the other -omancies and not be burdened by thinking at all?
Could you please use words which I can find in my dictionary?

Ah. I see I can find them on Wiki !
And there you can even find the term astrology paranoia
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Old 01-February-2009, 05:12 AM
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I'm kind of curious now. I'll have to go investigate what Astrologers are going to do with the KBOs. They all spend 20 to 50 years per sign, and are retrograde almost half the time. Quite a few go way outside the ecliptic, straying from the usual twelve signs... and there could be hundreds of them. I wonder how they process all of this.
Astronomers have not done a halfway decent job of processing and cataloging KBOs either.
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Old 01-February-2009, 05:21 AM
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Astronomers have not done a halfway decent job of processing and cataloging KBOs either.
Astronomers take measurements and ultimately compute orbits for KBOs, whereupon they are given a number and possibly a name. Spectra are taken for the larger/brighter KBOs. This, I think, is more than a "halfway decent job of processing and cataloging KBOs".

What would you consider to be "decent job of processing and cataloging KBOs"?
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Old 02-February-2009, 05:54 AM
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"What would you consider to be "decent job of processing and cataloging KBOs"?"

One that recognizes that KBOs large enough to be spherical are also planets, thus being "dual class" objects.

Or, any processing and classifying NOT done by the IAU.
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Old 02-February-2009, 07:48 AM
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Ah, so it's just a terminology issue. From your statement, I thought you had a technical concern.
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Old 03-February-2009, 05:15 AM
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Quote:
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What would you consider to be "decent job of processing and cataloging KBOs"?
One that recognizes that KBOs large enough to be spherical are also planets, thus being "dual class" objects.
And why is this so much more important than determining their orbits, discovering satellites of these objects and (where possible) their spectra?
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Or, any processing and classifying NOT done by the IAU.
Do I detect a bit of hate here?

What does it matter who does the dissemination of orbital and other data gathered by others, as long as it is done accurately?

My own two cents about the definition of a planet: I think it should be according to mass. Anything that orbits the Sun (and not some other body that orbits the Sun) with a mass greater than 10-8 of the Sun's mass is a planet, anything with a mass less than that is not. Avoid complicating the definition with difficult to verify criteria such as "clearing its orbit".

And the number I quoted is negotiable; set it to 10-7 or 10-7.5 if you like.
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Last edited by Celestial Mechanic; 03-February-2009 at 05:36 AM.. Reason: Replaced a double negative with a positive.
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Old 03-February-2009, 07:23 AM
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"And why is this so much more important than determining their orbits, discovering satellites of these objects and (where possible) their spectra?"

All of these factors are important. It's just that the IAU chose to ignore the issue of hydrostatic equilibrium. Ignoring any of these factors in cataloging these objects is a glaring omission.

"Do I detect a bit of hate here?"

Not hate, just skepticism and a bit of sarcasm. The IAU has not done a very good job regarding KBOs this far (including violating its own bylaws in the 2006 vote and rushing through a definition that is vague and makes no sense, then following it two years later with the universally disliked term "plutoids").
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