SFRPG

The forum for Science Fiction Role Playing Game inspiration and information! So Say We All!
It is currently Thu Nov 23, 2017 2:51 pm

All times are UTC




Post new topic  Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Thu Sep 15, 2016 12:52 am 
Offline
User avatar

Joined: Sun Jul 06, 2008 1:04 pm
Posts: 1038
Location: the Retirement Coast, NSW, Australia
Gaia is an orbiting observatory operated by the European Space Agency (ESA), a successor to Hipparcos. The ESA has published the data from the first year of Gaia's five-year mission: positions, magnitudes, and proper motions of over a billion stars; accurate parallaxes for one million of the closest.

Report in Space Daily

The data are available for download from the ESA website: http://gea.esac.esa.int/archive/

_________________
— Brett Evill

My SFRPG setting, Flat Black

© My posts to this board are copyright under the Berne Convention. They may be quoted on the board with appropriate attribution. They may not be reproduced beyond the board except with explicit permission from me.


Last edited by Agemegos on Mon Mar 20, 2017 8:34 pm, edited 1 time in total.

Top
   
PostPosted: Thu Sep 15, 2016 1:32 am 
Offline
Administrator
User avatar

Joined: Thu Jul 03, 2008 1:22 am
Posts: 5294
I've had a quick look at the TGAS data - big snags from a worldbuilding perspective is that there don't appear to be any spectral types associated with the stars, and the stars only have HIP and TYC names (so they'll have to be matched up with more common names with database merging kludgery). And there are a few stars with negative parallaxes, so those aren't right (they are a minority though).

Still, it's pretty awesome. I'm only really interested in the stars within about 200ly from Sol so those should be good. Whether it's got every single red or brown dwarf in the neighbourhood also remains to be seen though (Hipparcos only had the brighter stars, at least).

_________________
SFRPG Owner/Admin
This post (or any other post I made here) may not be quoted or copied beyond the SF RPG boards without my explicit permission.
Check out the latest news from Spica Publishing!
evildrganymede.net - visit the The Worldbuilding Hub, and check out my Science Blog!


Top
   
PostPosted: Thu Sep 15, 2016 4:06 am 
Offline
User avatar

Joined: Sun Jul 06, 2008 1:04 pm
Posts: 1038
Location: the Retirement Coast, NSW, Australia
Completely agreed — right down to my sharing your sphere of interest. I reckon that there are enough stars within 175 light-years of Earth that they could plausibly have more habitable planets than I know what to do with. Hipparcos data is reasonably complete out to 85 light-years — at least with respect to stars that are promising prospects for human-habitable planets — and lists 1,729 stars in that volume. 175 light-years is over twice that, suggesting 15,000 stars. With optimistic but defensible assumptions I get human-habitable worlds in 6.77% of systems: 1,021 within 175 LY.

_________________
— Brett Evill

My SFRPG setting, Flat Black

© My posts to this board are copyright under the Berne Convention. They may be quoted on the board with appropriate attribution. They may not be reproduced beyond the board except with explicit permission from me.


Top
   
PostPosted: Thu Sep 15, 2016 6:20 am 
Offline
User avatar

Joined: Sun Jul 06, 2008 1:04 pm
Posts: 1038
Location: the Retirement Coast, NSW, Australia
I hope the people who produced XHIP are excited by this.

_________________
— Brett Evill

My SFRPG setting, Flat Black

© My posts to this board are copyright under the Berne Convention. They may be quoted on the board with appropriate attribution. They may not be reproduced beyond the board except with explicit permission from me.


Top
   
PostPosted: Thu Sep 15, 2016 2:11 pm 
Offline
User avatar

Joined: Tue Jul 08, 2008 8:42 pm
Posts: 2661
Location: Texas, USA
I am very psyched about this data.

Thanks for the linky!

_________________
My friends call me Richard. You can call me Sir.
www.XmasDragon.com


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 5 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Limited