ELW bucket list

MattG

MattG
marx said:
Likely impossible, given that the habitable zone of O stars is far from where planets seem to form around them. But hey, I was wrong about T main stars before, so it would be great if I were proven wrong again.
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Planets around Os often seem to be lava balls. If an ELW exists, my feeling is it'll be as an ELM to a lava world - similar to how a good chunk of ELWs around Bs are actually ELMs. (Apparently the forum filters the plural of B, hence the weird bolding...)

Personally, I'd count the holy grail as an ELW+ELM pair. (Natural, that is, neither terraformed.) They should be possible, especially if the atmospheric moon surface temperature were fixed, but so many things would have to align just right that the odds are astronomically low.
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Heh, "astronomically". But yes, the most unicorny of all the unicorns... I live in hope.
 

marx

marx
MattG said:
For this category, how many of the ELWs were not ELMs?
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To my surprise, quite a lot. Let's see... 420 in total, 39 are around ELMs.
Generally, the principle seems to be ELWs that are very close to their parent star(s). Often thin atmospheres, which probably helps with the planets not getting too hot.
The moon-moons still tend to have smaller SmA-s than the moons though, so their views would be the best.

Also, a nice one among them all: Eactaimly CW-N d6-57, where the ELW has seven(!) landable moons, one of which has volcanism. Then there's Byoomiae UY-A d2780, which has a binary pair of volcanic moons (out of four), and the ELW is a trojan too.
 

MattG

MattG
marx said:
To my surprise, quite a lot. Let's see... 420 in total, 39 are around ELMs.
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Thought it was a lot higher amount of ELMs than that. I feel less bad about my last discovery then - ELW around an M (F main), with a moon that had volcanism. 7 sites, but all in bad places (ELW not visible or directly overhead), and tidally locked.
 

Steyla

Steyla
How about 2 stars, one ELW and nothing else.

Nvm, you already have it covered under Very rare.
 
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Mooing

M
marx said:
Personally, I'd count the holy grail as an ELW+ELM pair. (Natural, that is, neither terraformed.) They should be possible, especially if the atmospheric moon surface temperature were fixed, but so many things would have to align just right that the odds are astronomically low.
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Are there any instances of ELWs with a terraformable moon or ELM with terraformable planet?
 

marx

marx
@Mooing: Sure, although the former tends to be more rare. Think of them as an ELW+ELM pair that for some reason, failed to be. (Although often, it's because planets can be terraforming candidates but be under the 0.4 g required for being ELWs their surface temperature ends up too low.)

@JonathanBurnage: hm, I thought I had replied to that, but turns out I didn't. That's uncommon, because of the neutron star primary. No idea about the exact numbers on binary non-ELW partners, but they are certainly less rare than binary ELW pairs. From my experience, it's more rare when the binary partner non-gas giant planet isn't a terraforming candidate. (They are both in the habitable zone, after all.)

However, if the ELW directly co-orbit three stars (planet ID is something like ABC 1), then it's rare.
 
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JonathanBurnage

JonathanBurnage
Just realised that posting my earlier message in a rather groggy just woken up state, I missed the exact question. However, I’m sure I did recently find an ELW with a terraformable moon. If I wrote it down I’ll post it.
 

marx

marx
Zieman said:
I thought the g limit applied to terraformables too?
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I just checked, and looks like I was wrong on the g limit: it's the same 0.4 g with terraformables as well. I could have sworn I remembered ones lower than that, but that just goes to show how your memory can fail you.

Rather, the cause for failure is that the moons' surface temperature ends up too low, while still being a TC. Then there can be a "wrong" atmospheric composition as well. (A small hint of ammonia, and bam, it won't be an ELW.)

Also, more TC moons of ELWs than I thought: currently, 2,026 such moons out of 28,536 moons of ELWs in total. That makes it pretty rare though. Added this to the categories as well.

As for ELM parents that are terraformable: 506, which is interesting too, as the most common parent type for them is HMCP anyway. Of course, the parent has to be heavy enough to have a natural ELW as its moon, and enough of an atmosphere to push past the atmospheric moon surface temperature bug.
 
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JonathanBurnage

JonathanBurnage
JonathanBurnage said:
Just realised that posting my earlier message in a rather groggy just woken up state, I missed the exact question. However, I’m sure I did recently find an ELW with a terraformable moon. If I wrote it down I’ll post it.
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OK almost right - what I had found was a terraformable WW with a terraformable HMC moon. Somewhat analogous to our unicorn combo of ELW + ELM.
 

Just Call Me Dave

Just Call Me Dave
marx said:
As for ELM parents that are terraformable: 506, which is interesting too, as the most common parent type for them is HMCP anyway. Of course, the parent has to be heavy enough to have a natural ELW as its moon, and enough of an atmosphere to push past the atmospheric moon surface temperature bug.
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One of those 506 is mine :) Egnaiwn IR-U d3-272 4 a

It looks like I've only found 2 ELMs (both on the same day oddly enough), any idea which would be rarer, that one or Croomoi WY-A e142 2 a which orbits a non-terraformable HMC around a Neutron?
 

Macros Black

Macros Black
varonica said:
Then there was this one a while back;

h1o1Rrv.png


Solo ringed earth like world orbiting a neutron star.
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This is also my #1 shiny. Nearly fell of my chair when I saw it.
ISMmDOE.png
 

Erratic Spawn

Erratic Spawn
Quick question: An expedition member* on the Pegasus Run 3305 just discovered an ELW at a distance of 23 ls from a class M star. I could not find any data on distances, does anybody track this and if so, is it unusual (it sure sounds to me)?
*He's not on the forum so he asked me to post on his behalf.
 
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Orvidius

Orvidius
It's not unheard of, but some of the similar ELWs close-in on M-class stars like that are hand-crafted. Here are the top 25 from the EDSM data, where the ELW directly orbits a star (so this excludes ELMs, unless they orbit a brown dwarf or something like that):

Code: 
mysql> select planets.name,planets.distanceToArrival,stars.subType from planets,stars where planets.parentStar=stars.id and planets.subType='Earth-like world' and planets.distanceToArrival is not null and planets.distanceToArrival>0 order by planets.distanceToArrival limit 25;
+----------------------------+-------------------+-----------------------+
| name                       | distanceToArrival | subType               |
+----------------------------+-------------------+-----------------------+
| Eok Bluae YW-T a16-48 1    |                 6 | T (Brown dwarf) Star  |
| Aucoks DC-B a13-3 2        |                 7 | T (Brown dwarf) Star  |
| Praea Euq EA-A d57 2       |                 7 | L (Brown dwarf) Star  |
| Eoch Bli QK-F d11-3254 1   |                 8 | White Dwarf (DC) Star |
| Nyeajaae HW-V a70-2 1      |                12 | L (Brown dwarf) Star  |
| G 203-47 3                 |                12 | M (Red dwarf) Star    |
| Blaa Eork MR-E a11-1 2     |                12 | L (Brown dwarf) Star  |
| Mariyacoch A 2             |                13 | L (Brown dwarf) Star  |
| Trappist-1 4               |                13 | M (Red dwarf) Star    |
| G 203-47 2                 |                13 | M (Red dwarf) Star    |
| Swoilz XW-J a118-3 3       |                14 | L (Brown dwarf) Star  |
| Negidals A 2               |                14 | L (Brown dwarf) Star  |
| Eol Prou CR-A a27-22 3     |                16 | L (Brown dwarf) Star  |
| Aeternitas 2               |                17 | F (White) Star        |
| Sakarabru 3                |                18 | M (Red dwarf) Star    |
| Eol Prou VL-B b18-80 2     |                19 | L (Brown dwarf) Star  |
| Bleia Dryiae FQ-Z a109-6 3 |                19 | L (Brown dwarf) Star  |
| Prae Drye WT-T a85-1 1     |                19 | L (Brown dwarf) Star  |
| Ellairb DE-M b25-2 2       |                20 | M (Red dwarf) Star    |
| Ngaledi 3                  |                21 | M (Red dwarf) Star    |
| Chana 3                    |                22 | M (Red dwarf) Star    |
| Blu Thua AJ-X b28-1 2      |                22 | M (Red dwarf) Star    |
| Myoi Theia -W b1-0 1       |                22 | M (Red dwarf) Star    |
| Auphairsts EZ-W a28-0 1    |                22 | M (Red dwarf) Star    |
| Nyeajaae EE-F a107-7 1     |                22 | M (Red dwarf) Star    |
+----------------------------+-------------------+-----------------------+
25 rows in set (2 min 32.63 sec)
 
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