Homepage of Sergey Koposov

As a person born in Russia I find the current war started by Russia against the people of Ukraine abhorrent. I fully support Ukraine in the defence of their country and I hope that people in Russia who started this senseless war against my friends in Ukraine will be held resposible.

Stop the war now!


Sergey E. Koposov
Reader in Observational Astronomy, University of Edinburgh
Affiliated associate professor, University of Cambridge
Office: C24, Royal Observatory, Edinburgh
Phone: +44 131 668 8452
Email: skoposov (AT) ed (DOT) ac (DOT) uk

To students

I am accepting new PhD students. I am also happy to chat to any PhD or undergraduate students interested in galactic archaelogy, statistics or machine learning.

To postdocs

If you are looking to apply for one of the fellowships (Rutherford, Royal Society or others) and are interested in doing it in Edinburgh and work in the general area of Galactic archaeology, please check this page, and feel free to contact me to help with the application process and sponsor your application.

Featured recent papers

Constraining the shape of Milky Way satellites with distance gradients S5: The Orbital and Chemical Properties of One Dozen Stellar Streams
VVV-WIT-08: the giant star that blinked
Completeness of the Gaia-verse - IV. The astrometry spread function of Gaia DR2
Kinematics of Antlia 2 and Crater 2 from The Southern Stellar Stream Spectroscopic Survey (S5)
Search for globular clusters associated with the Milky Way dwarf galaxies using Gaia DR2

All publications:




Research interests:

  • Dwarf galaxies
  • Stellar streams
  • Milky Way structure
  • Gaia
  • Binary stars
  • Hyper-velocity stars
  • Large surveys
  • Databases
  • Data mining
  • Statistics

Press coverage/releases of some of work that I have been involved in

Some software I've written:

q3c astrolibpy sqlutilpy idl-sql
pg idl pg hist pg healpix arxiv-rank rvspecfit minimint

Me, Koposov Sergey