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Gonets-M №24, 25, 26 [block-15] & Blits-M1

Launch Time
Thu Dec 26, 2019 23:11 UTC
Last flight of Rokot.


Rokot/Briz KM
Status: Retired
Price: $41.8 million
Payload to LEO: 2,140 kg
Stages: 3
Strap-ons: 0
Rocket Height: 29.0 m

Mission Details


BLITS (Ball Lens In The Space) is a Russian satellite. The satellite is totally passive and spherical, and is tracked using satellite laser ranging (SLR) by the International Laser Ranging Service. The design of BLITS is based on the optical Luneburg lens concept. The retroreflector is a multilayer glass sphere; it provides uniform reflection characteristics when viewed within a very wide range of angles, and can provide a cross-section sufficient for observations at low to medium orbit heights. A similar design was already tested on a smaller laser reflector carried on board of the METEOR-3M spacecraft launched on December 10, 2001. The purpose of the mission was to validate the spherical glass retroreflector satellite concept and obtain SLR (Satellite Laser Ranging) data for solution of scientific problems in geophysics, geodynamics, and relativity. The BLITS allows millimeter and submillimeter accuracy SLR measurements, as its "target error" (uncertainty of reflection center relative to its center of mass) is less than 0.1 mm. An additional advantage is that the Earth's magnetic field does not affect the satellite orbit and spin parameters, unlike retroreflectors incorporated into active satellites. The BLITS allows the most accurate measurements of any SLR satellites, with the same accuracy level as a ground target.
Payloads: 1
Total Mass: 8 kg
Low Earth Orbit

Gonets-M №24, 25, 26 [block-15]

Gonets-M is a Russian civilian low Earth orbit communication satellite system. It consists of a number of satellites, derived from Strela military communication satellites.
Payloads: 3
Total Mass: 750 kg
Low Earth Orbit


Site 133/3, Plesetsk Cosmodrome, Russia



102nd orbital launch attempt


34th mission
31st successful mission
14th consecutive successful mission