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System name guide, yes the system name reveals the main star, mostly..
- Thread starter shadmar
- Start date
Here's a theory; should be easy to test. At any given distance from the galactic centre, the system names go in a ring around the galaxy from AA, AB, AC (...) AZ, BA, BB (...) to ZZ.
The number relates to distance from the galactic centre within the sector as Dogeh says. So we basically have an angle (AA) and a distance (sector name + number.) And an up-down distance maybe given by (sector name + third letter)
Predictions; at 30 Kylies from galactic centre a full strip from AA to AZ would run about 0.28 Kylies, 280 light years. The closer to the galactic centre, the shorter a run from AA to AZ, the further out, the longer.
The number relates to distance from the galactic centre within the sector as Dogeh says. So we basically have an angle (AA) and a distance (sector name + number.) And an up-down distance maybe given by (sector name + third letter)
Predictions; at 30 Kylies from galactic centre a full strip from AA to AZ would run about 0.28 Kylies, 280 light years. The closer to the galactic centre, the shorter a run from AA to AZ, the further out, the longer.
I see a K star with "d" in sistem name (**-* d). And A star with "e".
a - L/T/Y and M9
b - M and K9
c - M0/K/G
d - K0/G/F/A/NS
e - A0/B/O/NS/BH and Ae/Be
f - Herbig Star (Ae/Be)/B/O/NS/BH
g - like "f"
h - i see before "h" only with AA-A in sistem name. Rare astronmocal objects with big masses or radius (and radius). Orange Ae/Be , massive BH/NS, super blue/red star giants, Wolf Raie stars.
a - L/T/Y and M9
b - M and K9
c - M0/K/G
d - K0/G/F/A/NS
e - A0/B/O/NS/BH and Ae/Be
f - Herbig Star (Ae/Be)/B/O/NS/BH
g - like "f"
h - i see before "h" only with AA-A in sistem name. Rare astronmocal objects with big masses or radius (and radius). Orange Ae/Be , massive BH/NS, super blue/red star giants, Wolf Raie stars.
I am still investigating this. I'm going to return to inhabited space to pick up a ship with longer legs as I'm covering a lot of Kylies (and I'll need to do some pamphleteering for everyone's favourite princess while I'm there.)
I was completely wrong to think that the NN-N bit is relative to the galactic centre, it's relative to the sectors.
Also I hadn't appreciated just how many stars are in one of the sectors; very very roughly I make it about 10 million stars per (proc-named) sector. They are over a Kylie on each side after all.
I think that maybe the systems with T Tauris and Herbig stars are being treated as "the mass they'll have once they've finished accreting", so that it goes:
Young system where primary is still a T Tauri - the ZAMS mass of the primary is higher than its current mass.
System where primary is on the main sequence - the ZAMS mass of the primary is about the same or a little higher than its current mass.
Old, evolved system where primary is a stellar remnant - the ZAMS mass of the primary is higher than its current mass.
This would explain why low mass main-sequence stars (GKM) fit neatly onto the letter code scale but young and evolved stars are "higher" on the letter code scale than would otherwise be expected.
I've found interesting patterns in the distribution of stars within a group (e.g. DOOBRY AA-A D0, D1, D2, D3, (...), but that's another story and confusing me even more.
(edited to add) Elite was worth every penny for giving me this chance for fun.
I was completely wrong to think that the NN-N bit is relative to the galactic centre, it's relative to the sectors.
Also I hadn't appreciated just how many stars are in one of the sectors; very very roughly I make it about 10 million stars per (proc-named) sector. They are over a Kylie on each side after all.
I think that maybe the systems with T Tauris and Herbig stars are being treated as "the mass they'll have once they've finished accreting", so that it goes:
Young system where primary is still a T Tauri - the ZAMS mass of the primary is higher than its current mass.
System where primary is on the main sequence - the ZAMS mass of the primary is about the same or a little higher than its current mass.
Old, evolved system where primary is a stellar remnant - the ZAMS mass of the primary is higher than its current mass.
This would explain why low mass main-sequence stars (GKM) fit neatly onto the letter code scale but young and evolved stars are "higher" on the letter code scale than would otherwise be expected.
I've found interesting patterns in the distribution of stars within a group (e.g. DOOBRY AA-A D0, D1, D2, D3, (...), but that's another story and confusing me even more.
(edited to add) Elite was worth every penny for giving me this chance for fun.
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When I came back from Sag A*, I took the route along the bottom of the Galaxy (running out of stars as I neared the bubble, derp).
I noticed that as I rose towards the Galactic plane in a sector, the last letter (of the group of three) increased. So for example, the letter codes were XY-A at the bottom of the sector, going up to XY-Z near the top of the sector, depending on the letter of the star (B, C, D etc).
If that makes sense.
I noticed that as I rose towards the Galactic plane in a sector, the last letter (of the group of three) increased. So for example, the letter codes were XY-A at the bottom of the sector, going up to XY-Z near the top of the sector, depending on the letter of the star (B, C, D etc).
If that makes sense.
I now understand how the system name convention works. At least, I think I do, testing is ongoing. I'm so pleased with the progress I've made that I'm flying an Asp corewards heading for a denser region to examine and get more data on the brightest types of stars. Very happy, watch this space or PM me if you'd like to help test things.
(In other news, I'd forgotten how slow and clumsy the Asp is. But I really need the jump range this time.)
(In other news, I'd forgotten how slow and clumsy the Asp is. But I really need the jump range this time.)
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I'm in the rim, and can confirm he general findings of these thread. A letter can correspond to different classes, but the full spectrum (K9 VAB for example) has a big consistency in the Sector Name letter
This is also my experience.
a - L/T/Y and M9
b - M and K9
c - M0/K/G
d - K0/G/F/A/NS
e - A0/B/O/NS/BH and Ae/Be
f - Herbig Star (Ae/Be)/B/O/NS/BH
g - like "f"
h - i see before "h" only with AA-A in sistem name. Rare astronmocal objects with big masses or radius (and radius). Orange Ae/Be , massive BH/NS, super blue/red star giants, Wolf Raie stars.
This is also my experience.
a - L/T/Y and M9
b - M and K9
c - M0/K/G
d - K0/G/F/A/NS
e - A0/B/O/NS/BH and Ae/Be
f - Herbig Star (Ae/Be)/B/O/NS/BH
g - like "f"
h - i see before "h" only with AA-A in sistem name. Rare astronmocal objects with big masses or radius (and radius). Orange Ae/Be , massive BH/NS, super blue/red star giants, Wolf Raie stars.
This is the key to the whole code.
Linky
In short: imagine a sector - one of the big, proc-gen sectors, not a hand-placed one - as a cube, 1280 ly on each side.
For the most massive systems (at zero-age; there may be other modifiers, but in any case: all systems which use "H"), the cube is not divided. It is one big block and that block is called AA-A. So all the systems in will be called AA-A H(numbers).
For "G" systems, the sector is divided into eight smaller cubes, each of which is 640 ly on a side. Starting with AA-A on the "bottom" "west" "south" side. (See the link for details of the other prefixes, there's a logical order to them of sorts.)
For "F" systems, the sector is divided into sixty-four smaller cubes, for "E" systems into five hundred and twelve cubes, and so further.
By plugging in the appropriate prefixes you can navigate to systems of a particular letter code within the sector, provided those systems exist. Out here near Sol, there aren't so many big stars so the "F" and "G" systems don't always exist, but closer to the Core they do.
I'm going to use this information to start hunting "F" and "G" systems, so that we can start to refine exactly what divides an "E" from an "F" from a "G" from an "H."
From the Desk of Jackie Silver, episode 4:
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I'm going to use this information to start hunting "F" and "G" systems, so that we can start to refine exactly what divides an "E" from an "F" from a "G" from an "H."
Reveal all the mysteries of the Frontiers) In the sale of data also has a reference to the letters in the title. First the "h" systems, then "g,f,e,d".
P.S.: Used google translator.
Only very casually observed data from me, but in Eeshorks, all EG-Y systems are BHs.
Does this tally with your findings?
o7
Does this tally with your findings?
o7
I noticed with the AA-A searches, the first 7 or 8 were wrong uns (i.e. not centred on any particular system, and no AA-A system visible anywhere nearby), but then I got to AA-A H8 and was able to reach H16 in one trial.
Disappointingly the systems were almost all TT primaries with little or nothing of interest in orbit. This was somewhere corewards, Dryaa Pri region IIRC.
Disappointingly the systems were almost all TT primaries with little or nothing of interest in orbit. This was somewhere corewards, Dryaa Pri region IIRC.
Maybe it's not universal then. I've not been able to search for AA-A H since earlier this week - including in sectors I know have such systems because I had previously seen the AA-A H0 system and was heading for it but couldn't find it any more after logging out and back in again (or remember the co-ordinates well enough to find it manually either).
I did stick in a bug report and support said it was a known issue.
I did stick in a bug report and support said it was a known issue.
I've got the positional part of the system name code completely now. Details to follow in a separate thread.
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Not every sector has AA-A HX systems. It's not a bug. Many start with AA-A E.
I know there aren't always H systems but there is also a bug with some of them - I was in a sector with an AA-A H0 system that I was aiming for and then I logged in and could no longer find it with the galmap search (it started after the server issues earlier this week/last weekend).
FD confirmed it was a known issue when I raised it in the bug forum too.
Yes, for sure the SECTOR NAME AA-A H0 has been tweaked with 1.4 implementation. Before all of those were Wolf Reyets or Ae/Be or something exotic, right after 1.4 many sectors don't have them anymore and in many others they are just multi star B massive systems. In fact it felt like cheating, I've lost count of the Wolf Reyets I've found using the method, and eventually felt cheap.
