six-year search of the outer solar system turns up 461 new objects (but no Planet 9)
- notFritzArgelander
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six-year search of the outer solar system turns up 461 new objects (but no Planet 9)
https://phys.org/news/2021-09-six-year- ... lanet.html
PS No you're not going all deja vu all over again, the editors failed to cut a repeated paragraph.....
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: six-year search of the outer solar system turns up 461 new objects (but no Planet 9)
Good, thought I was losing it there for a second.
Any metaphor will tear if stretched over too much reality.
Gary C
Celestron Astro Master 130mm f5 Newtonian GEM
Meade 114-EQ-DH f7.9 Newtonian w/ manual GEM
Bushnell 90mm f13.9 Catadioptric
Gskyer 80mm f5 Alt/Az refractor
Jason 10x50 Binoculars
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(And a bunch of stuff I'm still trying to fix or find parts for.)
Gary C
Celestron Astro Master 130mm f5 Newtonian GEM
Meade 114-EQ-DH f7.9 Newtonian w/ manual GEM
Bushnell 90mm f13.9 Catadioptric
Gskyer 80mm f5 Alt/Az refractor
Jason 10x50 Binoculars
Celestron 7x50 Binoculars
Svbony 2.1x42 Binoculars
(And a bunch of stuff I'm still trying to fix or find parts for.)
- notFritzArgelander
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Re: six-year search of the outer solar system turns up 461 new objects (but no Planet 9)
With that many new not-planet-9 objects an analysis of the orbits might be interesting. Is the alleged correlation of TNO orbits real?
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: six-year search of the outer solar system turns up 461 new objects (but no Planet 9)
I saw that. Kind of curious.
-Michael
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
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Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
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Re: six-year search of the outer solar system turns up 461 new objects (but no Planet 9)
It's interesting, but I'd rate it "as expected".
IF TNOs have correlated orbits and I suspect that the "apparent correlation" Beelzebrown relies on is a mirage created by selection effects
AND IF the correlation was caused by a planet like body
THEN we know from https://phys.org/news/2021-02-evidence- ... ering.html from the thread https://theskysearchers.com/viewtopic.p ... t=Planet+9 that the odds are about 3 to 2 against it still being in the Solar System.
To reduce the odds even further, we already know that a planetary mass of the right size was ejected from the solar system during the great migration of planetary orbits to the current ones. I think it's a fool's errand to look but now that Mike Brown & Co. have let it out of the box it needs to be checked thoroughly.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
- KingNothing13
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Re: six-year search of the outer solar system turns up 461 new objects (but no Planet 9)
How do we know that? Not questioning the science, etc. behind it - I trust the scientist and the people that have been studying and working on it their entire lives - just wondering how we know this happened? What is the science behind it?notFritzArgelander wrote: ↑Sat Sep 18, 2021 12:38 am
To reduce the odds even further, we already know that a planetary mass of the right size was ejected from the solar system during the great migration of planetary orbits to the current ones.
-- Brett
Scope: Apertura AD10 with Nexus II with 8192/716000 Step Encoders
EPs: ES 82* 18mm, 11mm, 6.7mm; GSO 30mm
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 75; Herschel 400: 30; Caldwell: 12; AL Carbon Star List: 16
Brett's Carbon Star Hunt
Scope: Apertura AD10 with Nexus II with 8192/716000 Step Encoders
EPs: ES 82* 18mm, 11mm, 6.7mm; GSO 30mm
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 75; Herschel 400: 30; Caldwell: 12; AL Carbon Star List: 16
Brett's Carbon Star Hunt
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Re: six-year search of the outer solar system turns up 461 new objects (but no Planet 9)
Here we go, then, no worries. Articles fromKingNothing13 wrote: ↑Sat Sep 18, 2021 10:35 pmHow do we know that? Not questioning the science, etc. behind it - I trust the scientist and the people that have been studying and working on it their entire lives - just wondering how we know this happened? What is the science behind it?notFritzArgelander wrote: ↑Sat Sep 18, 2021 12:38 am
To reduce the odds even further, we already know that a planetary mass of the right size was ejected from the solar system during the great migration of planetary orbits to the current ones.
Scientific American
https://www.scientificamerican.com/arti ... st-planet/
Astronomy Now
https://astronomynow.com/2015/11/03/jup ... years-ago/
An interesting admission from Brown that his Planet 9 left the Solar System in the Wikipedia article (see near the bottom)
https://en.wikipedia.org/wiki/Five-planet_Nice_model
And lastly, but certainly not least, the science behind it all from arXiv:
https://arxiv.org/abs/1509.05397
It's all just Newton. The four planet Nice model is here:Models of the dynamical evolution of the early solar system following the dispersal of the gaseous protoplanetary disk have been widely successful in reconstructing the current orbital configuration of the giant planets. Statistically, some of the most successful dynamical evolution simulations have initially included a hypothetical fifth giant planet, of ice giant mass, which gets ejected by a gas giant during the early solar system's proposed instability phase. We investigate the likelihood of an ice giant ejection event by either Jupiter or Saturn through constraints imposed by the current orbits of their wide-separation regular satellites Callisto and Iapetus respectively. We show that planetary encounters that are sufficient to eject an ice giant, often provide excessive perturbations to the orbits of Callisto and Iapetus making it difficult to reconcile a planet ejection event with the current orbit of either satellite. Quantitatively, we compute the likelihood of reconciling a regular Jovian satellite orbit with the current orbit of Callisto following an ice giant ejection by Jupiter of ~ 42% and conclude that such a large likelihood supports the hypothesis of a fifth giant planet's existence. A similar calculation for Iapetus reveals that it is much more difficult for Saturn to have ejected an ice giant and reconcile a Kronian satellite orbit with that of Iapetus (likelihood ~ 1%), although uncertainties regarding the formation of Iapetus, on its unusual orbit, complicates the interpretation of this result.
https://en.wikipedia.org/wiki/Nice_model
Essentially Uranus and Neptune could not have formed in their present locations. The density of material in the proto solar system disk would be too low. This can be resolved by the Solar System being originally more compact with resonances and planetesimal driven orbital instabilities forcing transport to the remoter orbits we see now. The five planet Nice model with an ejected planet looks more like what we see now.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: six-year search of the outer solar system turns up 461 new objects (but no Planet 9)
Awesome, thanks nFA - I will add these sites to my reading list - which is growing.
-- Brett
Scope: Apertura AD10 with Nexus II with 8192/716000 Step Encoders
EPs: ES 82* 18mm, 11mm, 6.7mm; GSO 30mm
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 75; Herschel 400: 30; Caldwell: 12; AL Carbon Star List: 16
Brett's Carbon Star Hunt
Scope: Apertura AD10 with Nexus II with 8192/716000 Step Encoders
EPs: ES 82* 18mm, 11mm, 6.7mm; GSO 30mm
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 75; Herschel 400: 30; Caldwell: 12; AL Carbon Star List: 16
Brett's Carbon Star Hunt
- notFritzArgelander
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Re: six-year search of the outer solar system turns up 461 new objects (but no Planet 9)
Glad to help.KingNothing13 wrote: ↑Sun Sep 19, 2021 12:14 am Awesome, thanks nFA - I will add these sites to my reading list - which is growing.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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