Ivanoff Research Station (designation ONIRF IS-004920/001-54)[1] is a human-controlled monitoring and science station in orbit around Installation 03.

Little is known about this research station, it appears to be kept top-secret. Even ONI's top scientist didn't know about it, or ONI's intentions to research Forerunner Installations.[2]


After Installation 03 was discovered in 2552,[3] Ivanoff Station was established.[1]

In March 2553, Margaret Parangosky, director of ONI, interrogated Dr. Halsey in a cell on this station about the SPARTAN-II Program and informed her that all of humanity believes her to be dead, also noting that she would be working for Parangosky and her successor until they saw a reason for her to do otherwise.[citation needed]

Attack on StationEdit

Main article: Raid on Ivanoff Research Station

In 2557, the Ur-Didact along with a contingent of Jul 'Mdama's Covenant arrived at the station from the Forerunner Shield World of Requiem, in order to steal the Composer from the station and use it against Humanity. John-117 entered Ivanoff Station via a Lich he had boarded on Requiem prior to the ship's Slipspace travel. John-117's goal was to stop the Didact from getting the Composer by destroying it. However, John-117 failed to do so resulting in the Didact stealing and using the Composer to 'compose' everyone remaining on the station in order to create more Promethean Knights. However, John-117 was not composed because he was made immune to the composer's effects by The Librarian earlier on Requiem. John-117 and Cortana obtained a Broadsword from the station's hangar bay and loaded it with a HAVOK Tactical Nuclear Weapon to pursue the Didact and destroy The Composer before he reached Earth.[4] A number of Ivanoff's scientists made it off the station and managed to survive in the asteroid field surrounding the station until the UNSC came to rescue them.[5]

It is not known whether it is back to operational status after the attack.


  • Installation 03's Activation Index is actually located on Ivanoff Station, and can be seen on the level Composer.
  • Ivanoff Station is the first known official UNSC construction that has an Energy Shield protecting its Hangar. Previously, this was only in use by the Covenant. It is mentioned in-game as an "Emergency Harbor Barricade."


Concept Art Edit



  1. 1.0 1.1 Halo 4: the Essential Visual Guide, page 201
  2. Halo: Glasslands, page 428, 431
  3. ELEVENTH HOUR Transmission 5
  4. Halo 4 - Level: Composer
  5. Halo 4: The Essential Visual Guide, page 35