Looking up IRL stars from the Elite galaxy

o7 fellow cosmic pioneers!

I've just departed my new squadron and PMF home system on a jolly little jaunt around the nebulae in our galactic neighbourhood, and as I've been making my way 'up' the galactic plane to my first waypoint I've encountered a sort of curiosity...

You see, I'm hardly learned in the art and science of astronomy but (obviously since I'm here) I find it all fascinating! Sometimes when I'm taking a smoke break I'll whip out the stargazer app on my phone and try and look up at where I've parked my spaceship, so when I picked a random system as my first waypoint I plotted a route to HIP 64938; it seemed as good as any because it was approximately 1kly 'above' my starting location from where I could zoom over my target nebula and drop back down on the rimward side to get those lovely views of it against the galactic core. It's also my understanding that the HIP designation is from a real-world star catalogue so, in theory, one could look up present day information or data on said star... you know, just for that wow moment when you appreciate the size, scale and endeavour of this 1:1 galaxy.

When I plugged 'HIP 64938' into google though I'm either struggling to find what I'm looking for, or not understanding what I'm looking at... both equally possible! The top result on said internet search is this page here which gives the designation HR 3093, with the other names listed as HD 64938 / HIP 38794 amongst others. Comparing the right ascension and declination from said page (they give the star's location as it appears in the sky here, right?) they don't match up with the HIP 64398 record on EDSM, although to be fair there's a thousand years or so difference isn't there! Following on from that this page here, a couple down from the top search hit, matches up with the first search hit and also gives the designation HD 64938; the data from both pages about the same IRL star match up, but I can't make heads nor tails of how they match up to the in-game star, or if I'm even looking at the right stuff.

Some possibilities and queries;

1). I'm not reading the data presented to me correctly or misinterpreting it. Has anyone any pointers therefore to a layman's guide to looking up in-game IRL stars beyond the obligatory google/wikipedia searches?

2). I've misunderstood and it's not a real star, back to flying my spaceship!

3). I'm not clever enough to keep playing this game and should do something more appropriate, like getting drunk and making a public nuisance of myself.


So, great and learned community of virtual space explorers, can I pick your brains for any enlightenment? Space is an amateur passion of mine so it's rather fun being able to look up real-world information and articles on cosmic phenomena you can find in game, so thanks in advance for any assistance!
 
When I plugged 'HIP 64938' into google though I'm either struggling to find what I'm looking for, or not understanding what I'm looking at... both equally possible! The top result on said internet search is this page here which gives the designation HR 3093, with the other names listed as HD 64938 / HIP 38794 amongst others.

Many stars have all three, HIP, HD, and HR designations assigned to them in real life, as well as catalogue numbers from other catalogues, these are all correct and can all usually be used for searching in the galaxy map, taking you to the same star, the only puzzling thing is how FDEV decides which one they will use. It appears at the moment that FDEV use the HD designation for more distant stars and HIP for stars closer to the bubble, but I have no idea what decides a star will use the HR designator or why they sometimes decide to use a catalogue number from an entirely different catalogue.

For instance HR 7825 also has the assignments HIP 74121 and HD 134323. Searching for any of these three names will take you to Gliese 579.1 (yes a different catalogue altogether).


Yes it is confusing, I suggest looking through HIP hunt here, it has a complete spreadsheet of all possible HIP numbers which we are confirming!

 
Real-world astronomical data for stars gives right ascension-declination co-ordinates - essentially, the 2-D position of the star in the night sky. Astronomers don;t know and don;t really care about how far away the star is, as they don;t need to know that if they're simply pointing a telescope at it. But ED uses a 3-D model of the galaxy, and to get a 3-D model you need a third measurement - distance.

For many stars we don't even know a good, precise distance measurement. Take Betelgeuse, for example - a big, bright, famous star, not too far away by galactic standards - but current estimates for the distance to Betelgeuse range from 499 to 630 LY away, with a consensus average of around 548 LY. In a game with a starmap with less than 0.1 LY resolution, a variability of plus or minus 130 LY simply isn't good enough. So, to put Betelgeuse in-game, they had to give it a very precise, yet fictitious, distance - in this case, they put it exactly 497.97 LY away from Earth.

These estimates change as astronomers get better data. Back when the ED starmap was made, best guess for distance to Betelgeuse was "about 500 LY", so that's where they put it.
 
And just to make things more confusing, it was recently discovered that our own system is actually about 2000 lightyears closer to the center of the galaxy than previously thought, but Elites galaxy already has us kinda close to this new estimate anyway. That and the fact that the game has been running for 6 years now, new stars have been discovered and others have likely had new estimated distances calculated means that nothing is probably all that close to where it really is any more.
 
Well done for visiting an HIP star. If you see any more of them, you must visit !
(But only if you are using EDMC or EDDiscovery, that way the Glorious HIPs project will pick them up.).

To be honest I only picked it because it was approx 1kly directly above me and I thought I’d be able to look it up in the night sky!

My Nearby Nebula Tour should take me on a circuit round the California, Elephant’s Trunk, Cave, North America and an NGC #### Nebula (forgot the exact designation of that one...), all on my supported faction’s side of the Bubble for a little sightseeing of the local galactic neighbourhood.
 
I'm back folks!

Thanks for the helpful info about the star catalogues, especially @goemon for pointing me towards Simbad. I mean, I still don't know if I can read a lot of what I'm looking at but it sure makes me look clever if the window cleaner ever peers in and sees it open on my desktop! My 'Nearby Nebula Tour' has taken me from the California Nebula out towards NGC 7822, which is a stunning star cluster in the skybox as I was approaching! I've just got a bit of a follow-up to check I'm using these resources correctly.

Looking up NGC 7822 this article I see the line 'The complex also includes one of the hottest stars discovered within 1 kpc of the Sun, namely BD+66 1673, which is an eclipsing binary system consisting of an O5V that exhibits a surface temperature of nearly 45,000 K and a luminosity about 100,000 times that of the Sun', which sounds like something I'd like to add to the holiday photo album. So we plug BD+66 1673 into Simbad and we end up here, which gives us some identifiers we can look up in EDSM. From there we find the system HIP 139 via EDSM, which it gives as being 1.4kly from my current position just outside of the NGC 7822 cluster. Once again though, some of the data for the in-game and IRL stars aren't quite matching up, which makes me less certain although I do understand that there will be discrepancies and we're not running a perfect galaxy sim. Am I doing these searches correctly, and am I looking at the correct EDSM system if I'd like to make a detour to visit the aforementioned binary star system?


Once again CMDRs thank you kindly for your patience, and your assistance in helping this eager yet amateur star-trekker!
 
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Have you seen this? Not entirely related, but really nice

 
Have you seen this? Not entirely related, but really nice


Ooo! Thanks for that, I'll have a look through and see if I can add anything to the itinerary!
 
Yes, BD+66 1673 is HIP 139. HIP 139 is called HIP 139 ingame. Galaxy map says o5 V as star type; it also has two black holes. no need for edsm at that point - HIP is one of the catalogues fully (?) ingame. And yes, it isn't exactly where those astronomers today you quoted expect it at NGC 7822. but this might change or not any day (as sometimes new research changes the most probable distance) - it should be and the right place of the skyboy viewed from sol though!
 
Yes, BD+66 1673 is HIP 139. HIP 139 is called HIP 139 ingame. Galaxy map says o5 V as star type; it also has two black holes. no need for edsm at that point - HIP is one of the catalogues fully (?) ingame. And yes, it isn't exactly where those astronomers today you quoted expect it at NGC 7822. but this might change or not any day (as sometimes new research changes the most probable distance) - it should be and the right place of the skyboy viewed from sol though!

Brilliant! Thanks, I thought I was starting to get the hang of it I was just a little uncertain still. I'm only using EDSM to search for them while I'm sat at my desktop waiting for my PS4 controller to charge up, otherwise I'd just have searched for the straight on the GalMap. In fact, looking closer at the spectral type on Simbad it give the same o5 V as the in-game system, so I should have been looking at that rather than distance, or temperature, or other values that have margins of error that might not match up between the game and reality.

It's just awesome though isn't it, both the scale of the game and the actual galaxy... space is AWESOME! Thanks for your assistance @goemon, HIP 139 is now added to the holiday sightseeing list!
 
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