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Forum » SpaceEngine » Space Journeys » Challenge: Find a new home! (I've been searching for a while, but nothing's very good...)
Challenge: Find a new home!
Tangle10Date: Thursday, 24.04.2014, 23:07 | Message # 16
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Mass is fairly important for 2 reasons: 1, it's likely with a low mass it'll be hard to hold on to an atmosphere and heat. 2, With a lower mass it's likely that the hyperdrive will be very imprecise.




Tips for finding Earth-Like planets: Look for F, G, or K Class stars. M class habitables will almost always be tidelocked. Oceanias can, of course, also be habitable, they just have tiny amounts of land.
 
neutronium76Date: Friday, 25.04.2014, 07:10 | Message # 17
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Quote Tangle10 ()
it's likely with a low mass it'll be hard to hold on to an atmosphere and heat


Quote B25Mitch ()
If surface gravity is normal,





PC1:Core i7 970@3.34GHz, 6 cores/12 threads, 12GB DDR3 RAM@1.34GHz, 2x(SLI) GTX-580 GPUs 3GB VRAM(GDDR5)@1GHz, OS:Win7x64SP1
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Tangle10Date: Saturday, 26.04.2014, 17:29 | Message # 18
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True, but that would require a fair bit of density. Earth sized Rocky planets tend to like having non-extreme nor very different density.




Tips for finding Earth-Like planets: Look for F, G, or K Class stars. M class habitables will almost always be tidelocked. Oceanias can, of course, also be habitable, they just have tiny amounts of land.

Edited by Tangle10 - Sunday, 27.04.2014, 01:32
 
UnnamedDate: Saturday, 26.04.2014, 19:46 | Message # 19
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Earth has the highest planet density on the solar system..




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Tangle10Date: Saturday, 26.04.2014, 23:32 | Message # 20
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I'm taking Earth as non-extreme. Also, Mars is really really bad for taking that because it's incredibly tiny. Also, Venus is just 0.3 away from Earth's density so not really.




Tips for finding Earth-Like planets: Look for F, G, or K Class stars. M class habitables will almost always be tidelocked. Oceanias can, of course, also be habitable, they just have tiny amounts of land.

Edited by Tangle10 - Saturday, 26.04.2014, 23:32
 
Pds314Date: Monday, 28.04.2014, 06:38 | Message # 21
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Does this count? It has an impressive 0.966 ESI.
It orbits a K2 Star at 1.171 AU SMA, 1.061 AU Pericentric. Said star is part of a binary that Includes a G1 V 33 AU away.
It has a temperature of 285.54 K.
It has a mass of 1.2565 Earth masses.
It has a gravity of 1.1665 g.
Its atmosphere exerts 1.3085 atm of pressure At Sea Level.
And it rotates in 14 hours, 13 minutes, 1.58 seconds.

RS 9518-918-7-359811-88 B5 - Earth analog with multicellular marine life.
 
Tangle10Date: Tuesday, 29.04.2014, 02:53 | Message # 22
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Yes, it does count. Added!

--------------------------------
Edit: Vega 4.4, surprisingly close and surprisingly safe!






Tips for finding Earth-Like planets: Look for F, G, or K Class stars. M class habitables will almost always be tidelocked. Oceanias can, of course, also be habitable, they just have tiny amounts of land.

Edited by Tangle10 - Sunday, 04.05.2014, 21:13
 
UnnamedDate: Wednesday, 07.05.2014, 01:09 | Message # 23
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I finally found a candidate!

Its year almost lasts exactly 1 earth year and its almost exactly 1 AU from its star, a G9 V Dwarf!
Oh, and those rings too!
Bad thing is its fast rotation rate :/





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Edited by Unnamed - Wednesday, 07.05.2014, 01:09
 
relox84Date: Thursday, 08.05.2014, 23:38 | Message # 24
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I recently found an Earth-like planet in the Sagittarius dwarf galaxy and, despite the fact it is around 65000 light years from our planet actual location, it is still an interesting place, except for a fact we shall see soon.

But first, let me show you the characteristics of this planet :

Name: Golan-67 d (official), Demeter (unofficial)
Code: RS 8425-5-8-4540527-1 4
Diameter: 9302.447 km (0.729 earth diameter)
Mass: 2.3381e24 kg (0.391 earth mass)
Density: 5.5733 g/cm^3 (1.011 earth density)
Surface gravity: polar: 7.1799 m/s^2 (0.732 g); equatorial: 7.2975 m/s^2 (0.744 g); average: 7.2176 m/s^2 (0.736 g)
Revolution period: 347.769 days of 18h 46m 42.5s (271.984 earth days)
Rotation period: 18h 46m 42.5s (0.7821 earth day)
Orbital eccentricity:[u] 0.082 (5 times more eccentric than earth)
ESI: 0.925

Atmopsheric pressure:[/u] 1.2747 atm
Temperature: 277K-4°C (winter); 298K-25°C (summer); 287K-20°C (at a distance to Golan-67 equal to the semi-major axis); 48.457K (greenhouse effect)
Moons: 2 yet unnamed captured asteroids
Semi-major axis: 114.31 Gm (0.762 UA)
Star class: K1 V (orange dwarf)

As you may have noticed, the mass of the body is ever so slightly lower than the minimal required (97.75% of it sad ), but the relativly high density allows a reasonable surface gravity wich could allow a human colony to live without feeling much difference. I will understand if you decide to delete this world from the list, but a 2.75% difference is'nt that much of a problem wink

Anyway, let's see the planet landscape and atmosphere :

Physical description:

The landmasses are mostly grouped in a supercontinent which covers more than 40% of all the body surface, althrought this continent is cut by lakes and seas, showing that, as of our earth a few hundred million years ago, Demeter's continent has probably been made by the reunification of at least six continents originally scatterd around the planet, wich proves the presence of plate techtonics, and possibily volcanic and seismic activity. The inland seas also provide a temperate climate with small scatterd deserts, instead of a huge sterile desert. The poles are obviously colder, and this can be seen on the local vegetation which is darker, and despite the lack of any ice caps, a small area around the poles is devoid of life.

Atmospheric characteristics:

The atmosphere is blue with white liquid water clouds, and is a bit thicker than the earth's.
The colour is certainly due to a presence of dinitrogen, a part of dioxygen due to the presence of chlorophylle based life, and a small part of carbon dioxyde because this is what they breath. We can easily estimate that the atmosphere is breathable for humans, except the fact it could have traces of toxic molecules, like, for exemple, hydrogen cyanide.

Positive points:

-the planet has a lot of temperate land masses, which is nice for etablishing big colonies, and could hold a few billion inhabitants.
-the planet has a temperature really acceptable for humans with seasons very similar to earth.
-the planet has a breathable atmosphere with an accpetable pressure.
-the planet is a nice vewpoint from above the miky way.

Negative points:

-the planet has a low mass, witch makes it difficult to encounter with a regular space ship, or to target with a worm hole ship.
-the planet already has life on it, and aboriginal creatures could be hostile towards mans, or even host an intelligent civilisation which could trade with himans, or even fight them.
-the planet doesn't have any massive moon to stabilise his tilt or generate tides, and the seasons are mainly created by the high excentricity.
-finally, the planet has a high rotation period, which could constrain human settlers to adapt their sleeping time.
 
Sidney600Date: Saturday, 24.05.2014, 19:54 | Message # 25
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I've found several really great planets (6 to be exact! :D):

Botolox:
RS 0-7-936301-0-6-8-2130638-212 A4.1
Max ESI: 0.919


Talynn and Talonna: (Binary planets)
Body "RS 8409-3161-8-7731711-171 1.1
Max ESI: 0.908 for both planets
(Not the greatest atmosphere but whatever.)


RS 0-8-3893383-365-28-8-8926744-11 4
Max ESI: 0.971


RS 0-4-948-39-25437-8-7653278-301 3
Max ESI: 0.970


Fire and Ice
RS 0-4-2748-596-25551-7-1963895-128 B5
(Extremely varying temperatures, from 225K to 275K)


And then there is this one with a max ESI at 0.983 (Not the highest I've found, but the best candidate for this competition).
(Planetary day is 68 days though sad )
RS 10373-57-8-6658642-264 1.20
 
Tangle10Date: Wednesday, 28.05.2014, 01:00 | Message # 26
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One problem: This isn't the ESI contest. However, I will look at your planets and see if they are actually viable.




Tips for finding Earth-Like planets: Look for F, G, or K Class stars. M class habitables will almost always be tidelocked. Oceanias can, of course, also be habitable, they just have tiny amounts of land.
 
Master_RamboDate: Tuesday, 24.06.2014, 15:48 | Message # 27
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I found not one, but two binary Earth-like Terras with multicellular life!


A day on both of them is 1.008 Earth days (24 hours basically) And a 301 day year.


BOTH of them have life and they orbit around binary stars


I imagine them being an advanced alien race that has colonized both of these planets, and go to and from these planets all the time (imagine ships all over constantly transporting each other back and forth through these planets, like a highway!)

They both eclipse each other too:






I'll enter the blue one and here's why:

The temperature averages between 280 K to 300 K depending on whether it's near the further star or not. The mass is 0.92 and the size is virtually the same as Earth's with gravity at 1.03 (barely any difference from ours)
The only issues I see is the atmosphere pressure is 2.69 but I imagine we can get around that somehow...and the axial tilt is 169 degrees.
Also, ESI varies depending on where it's at, from 0.930 to 0.980.
 
RiasDate: Friday, 27.06.2014, 01:10 | Message # 28
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RS 8410-1-7-1772604-1044 4
Key Stats:
Oceania with marine orbiting a G1 star
Atmos Pressure: .780 atm
Gravity: .919
Mass: 2.65
Temp: Ranges between 285K - 297K
Rotational Period: 15h 59min
ESI: Ranges between .837 to .857
Orbital Period: 1.192 years


Edited by Rias - Friday, 27.06.2014, 01:29
 
Tangle10Date: Saturday, 28.06.2014, 16:45 | Message # 29
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I've added the binaries but have yet to check out Rias' oceania. However, I just realized its atmo pressure is .780, which means it must be added to the second list. Also: Deserts are now allowed to be added. They are very often totally uninhabitable, but there are some where the temperature outside is habitable for around half an hour and all else is okay. Take into account this one:


RS 8409-1792-7-1118668-18 4.6- A desert moon capable of sustaining human life... for maybe a day or so if the humidity's low, which it is likely to be. 320 K! 3 times atmo pressure, which is also kinda high. Adding both to the second list now.





Tips for finding Earth-Like planets: Look for F, G, or K Class stars. M class habitables will almost always be tidelocked. Oceanias can, of course, also be habitable, they just have tiny amounts of land.
 
TJCacherDate: Monday, 30.06.2014, 06:37 | Message # 30
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Hello,

I have a submission, if you're still taking entries - I don't think anyone has submitted this one yet, and it's actually in the Milky Way:

RS 8409-1796-7-592226-69 3
(In the Milky Way, about 6,386.47 light years from Sol)

Proposed name: Aeternum

Temperate terra, no life
Parent Star: Yellow Dwarf, G0 V, about 30% larger than Sol
Planet orbits about 1.391 AU from star
Planet diameter: 1.1941 x Earth
Gravity: 1.42g
Atmo Pressure: .91436 atm
Temp: Avg 288.41K, range: 282k to 303k
Orbital period: 1.442 years
Rotational period: 2.624 days
Large axial tilt a little over 76 degrees
One moon, 5786 km in diameter, same proportion as Luna/Earth


Attachments: 9164228.jpg(222Kb)


Edited by TJCacher - Monday, 30.06.2014, 06:40
 
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