System name guide, yes the system name reveals the main star, mostly..

[shadmar]

I noticed the system names have a system.
How is this useful?

1. You can search for black holes and O stars or other rare stuff (kinda)
2. You can predict the main star of the next jump, by the name without opening galmap.
3. You can predict all star types shown in your nav panel, if you dont want to open your galmap.

So generated systems are usually named in this manner:

[NAME] [MAYBEANOTHERNAME] [TWOLETTERS]-[ONELETTER] [LETTER][NUMBER] .....numbers and or letters... varies..

Like :
PUELIO CD-I C23-2 - probably a K-class star
PREAE AIHM BC-D D12-111 - probably a F-class star

So the letter we are looking for are the letter after the XX-X part (twoletters-letter), this reveals the main star, but it's not accurate.


These are my observations so far.. looks like it's kind of age sorted, but not quite.

A = Y stars, brown dwarfs
B = M stars, sometimes brown dwarfs
C = K stars
D = F,G or A stars, TTS can also be found, neutron/dwarf stars are often also D or E in the neutron fields (maybe they once were F,G or A)
E = B stars mostly, very rare, AEBE or BH
F = BH, sometimes O and B stars, TTS rare
G = O or BH and TTS (rare)
H = Special like nebualas the (XX-X is often AA-A)

If you are just jumping and wonder if the next star is scoopable, B (if not in the L-field), C are pretty safe, D too (if not in the neutron fields).

I suspect the numbering after the letter has a meaning too but I haven't explored that yet.
If you have some more information or somone already did this, please speak out

Thanks.

 

[EUS]

Most of the BH I've discovered fall in the AA-A series.
There's another series too, but I cannot remember it, and I won't be able to get on tonight to check.

 

[Katejina]

Most of the BH I've discovered fall in the AA-A series.
There's another series too, but I cannot remember it, and I won't be able to get on tonight to check.

HH-O I believe is also one of the mainly BH/NS series.

Just went back to look at the screenshots I took of when I encountered a NS field with a handful of BHs, but they do not follow this naming system, so I can't apply it.

 

[Zieman]

Yes, a to d seems to predict scoopability right (kept my eyes open when flying to Sothis).

Just looking at Synuefai TZ-M d8-18, and it is scoopable, but not F, G or A - it is an M-class star.

 

[CMDR AKIRA MASAKARI]

I have looked in my database with suspicion but in the end what OP says is corrrect, altough there are many exceptions.

Also if you just put the sector name in the search engine, it points to SECTOR NAME AA-A H0 wich usually is a strange star. In the 4th quadrant they are almost Wolf Rayets or Ae/Be.

 

[shadmar]

Searching these in the galmap will often reveal (G) named types, like O, TTS, Herbig, BH etc :

SECTOR NAME EG-Y
SECTOR NAME FG-Y
SECTOR NAME CL-Y
SECTOR NAME DL-Y
SECTOR NAME ZE-A
SECTOR NAME BA-A

 

[Dogeh]

The numbers are curious.
Right after the star letter code the numbers increase as you move across the sector core-wards.
Their only use is knowing when you're about to cross into a new sector.

Before changing sectors:
B stars get to about 60
C stars get to about 30
D stars get to about 15

Someone may have a more accurate take on it.

 

[Jackie Silver]

Interesting. I hadn't thought of the letter as pointing to the type of the main star, I've always thought of it as a coordinate. I will research this.

(like a meerkat muppet, I've managed to commit myself to doing several things at once, so it could be a while...)

 

[Jackie Silver]

Hypothesis: the letter rating is given by the mass in the system. either the mass of the primary or of all stars added together. The mass could be either current or ZAMS.
This would broadly explain the observed progression and the clump of F, G and A stars together as "D" prefix.

Possibly;
0 - 0.25 Msol = A
0.25 - 0.5 Msol = B
0.5 - 1 Msol = C
1 - 2 Msol = D
2 - 8 Msol = E
8 - 16 Msol = F
16+ Msol = G

Could also be a power law rather than straight boundaries.

 

[Krunchie]

It could also be about rarity, A being the most common and H being the rarest.

 

[Jackie Silver]

I'm investigating this now - interesting results so far - I'm gathering lots of data and it will be a while yet.

 

[Fen Harel]

An excellent observation! Well done!

 

[Jackie Silver]

I've surveyed about 100 fresh systems, well outside the inhabited area to avoid the known weirdness of the proc-gen there. I went to Saiph and headed east.

It appears that the letter class is purely determined by the mass of the primary star. There were no anomalous systems where the letter classes overlapped for a given mass.

The boundary between "B" and "C" appears to lie at 0.45 Msol, fairly exactly. The boundary between "C" and "D" appears to lie around 0.9 Msol. I encountered no "A" or "E" systems; the "A" to "B" boundary would appear to lie under 0.2 Msol and the "D" to "E" boundary above 1.77 Msol. Need more data as always.

As far as I can tell, if the system age is under 200 MY stars are T Tauris, else they're main sequence stars. More data.

There are interesting patterns in the way the other letters and numbers are structured, I'm working on it.

This is cool stuff. Kudos shadmar.

(and I found a binary pair of Earth-likes, too)

Here's a plot, mass of primary star on y, age of system on x, each letter class in a different colour:

Spoiler

 

[shadmar]

This is excellent I never thought of connecting them to mass. Good observation!

 

[Traveller_GG]

Most of this information is available in the wiki article:

http://elite-dangerous.wikia.com/wiki/Stars

Each star or dwarf in Elite: Dangerous has an identifier for its classification which conforms to the Morgan–Keenan (MK) classification system.

For example, the Sun of Sol has the classification identifier: G2 V
Each identifier consists of three components:

1. Spectral class: A capital letter out of the sequence: O, B, A, F, G, K, M. (A helpful real-world mnemonic for remembering this is, "Oh Be A Fine Girl, Kiss Me.") This mainly specifies the temperature ranging from O (hottest) to M (coolest). Other letters specify extensions to this classification system, namely: W, L, T, Y, C, S, D. A few of those classes have subclasses such as DA, DB and DC as subclasses of D.
2. Spectral subclass: Each letter class is then subdivided using a numeric digit with 0 being the hottest and 9 being the coolest.
3. Luminosity class: A luminosity class is added to the spectral class using Roman numerals.This classifies the stars by its spectral characteristics considering color and brightness. Those spectral characteristics provide information about the type of the star:

• 0 or Ia for hypergiants
• I for supergiants
• II for bright giants
• III for regular giants
• IV for sub-giants
• V for main-sequence stars (most of the known stars belong to this class)
• VI for sub-dwarfs
• VII for white dwarf

Thus, G2 V means: The Sun is semi hot (G), it belongs to the hotter stars (2) in class G and it is considered as a so called main-sequence star (V).
Some stars also have a luminosity subclass, indicated after the main luminosity class. For example, a B5 IIIa star would be a particulary bright Blue-White giant, while a B5 IIIb would be a less bright giant, and a B5 IIIab would be somewhere in between. Any luminosity class can have a subclass, although the difference between a B5 IIIa and a B5 IIIb would be much more noticeable than between a M5 Va and a M5 Vb.

 

[Thrawn29]

Nice analysis CMDR Jackie Silver.

I also tried to check this yesterday evening. And i agree with your findings.
Something to note : the letter does not mean anything regarding the system size/mass, it's only about the main star.

Now, i'm wondering if the following number means anything : PREAE AIHM BC-D D12-111 ?

 

[Jackie Silver]

I merged the recent data from the systems I looked at with some older data (about 400 more stars) which came from various explorers all over the galaxy.

This time there were a number of anomalous systems - a dozen or so stellar remnants which were given a letter class higher than would otherwise have been expected from their mass.
I think this means that the mass used to pick the letter is the zero-age mass, so a system with high initial mass (say a "B" star) which subsequently loses much of its mass when it becomes a neutron star is still considered as if it was its original mass.

Here is a pic of the merged data:

Spoiler

The "A", "B" and "C" classes are still separate but "D" and higher can sometimes be found with low masses when they are remnants.

Now, i'm wondering if the following number means anything : PREAE AIHM BC-D D12-111 ?

I think I may be getting somewhere with this - in the "BC-D" in the above example the "B" is a measure of x coordinate position ("east - west" axis) and I believe the "C" and "D" are y and z coords - not sure which way round, I will check - BUT they are obfuscated somewhat according to the letter class of the system so that a coordinate which was given as say "SQ-G C" is almost identical to "LH-N B" - I'm going to look at this now. The first number may be some kind of reference to a predefined position within the "box" of the sector and the second number points to a particular star.... something like that. I will start getting more detailed coordinates.

 

[Jackie Silver]

Current dataset, with coordinates. Confusing.

 

[Cody]

Confusing.

<chortles>

 

[Jackie Silver]

I hope this isn't too much of a tangent...

Here's a plot of east-west north-south coordinates for a set of stars in the unexciting FLYUA DRYOAE sector.



These are FLYUA DRYOAE MW-O B25-0, NW-O B25-0, OW-O B25-0, (...) , AX-O B25-0, BX-O B25-0, CX-O B25-0 (at which point the sector ends.) The up-down coordinate hovers around -190.

I've been here before trying to work this out; the coordinates look rotational in some way rather than linear, and the actual position of the stars may not be fully described by their name (if it is, maybe it's by adding some checksum offset to the position - e.g. it says "ah, this is FLYUA DRYOAE MW-O B25-0, which means position such-and-such, BUT the checksum for the whole name means offset it by x,y,z" - so instead of a nice straight line or curve you'd get the scattered appearance as shown above.)

Next steps would be to follow one of these big lines of stars across several fully proc-gen sectors (FLYUA butts up against various named sector areas which confuses matters) and to follow "alternative" lines like MW-O Bxx-0 where xx is some other number. All time-consuming stuff.