Kosmos-2499 beside Briz-KM No. 72521
A satellite of Central Sci. Res. Inst. for Chemistry and Mechanics came up beside a rocket stage of Aerospace Defence Forces, 0.526 km away at the nearest its sources state.
Reported: 1 public report other than Orbinauts names these two.
From the public record
- From
- May 23, 2014
- to Nov 29, 2014
- Closest stated
- 0.526 km
- Nov 25, 2014
- Orbit
- LEO
- low Earth orbit
The one that moved
Kosmos-2499
Central Sci. Res. Inst. for Chemistry and Mechanics, RU
39765 · 2014-028E · launched May 23, 2014
The one it came up to
Briz-KM No. 72521
Aerospace Defence Forces, RU
39764 · 2014-028D · launched May 23, 2014
What the sources state
Every day and distance here is the sources’ own, to the precision they state.
- When
- May 23, 2014 to Nov 29, 2014
- Same planeMay 23, 2014
- launched together on 23 May 2014
- BesideNov 25, 2014
- approached its Briz-KM stage to 526 m at 0.064 m/s on 25 November 2014
- Closest statedNov 25, 2014
- 526 m
- LeftNov 29, 2014
- climbed above the stage on 29 November 2014
The detector was not yet running: it reads low Earth orbit since April 2026 and the geostationary belt since October 2026.
Reported elsewhere
Who else said these two were together, earliest first.
| Said on | Who | What |
|---|---|---|
| Nov 29, 2014 | Analyst | Anatoly Zak, "Kosmos-2499", RussianSpaceWeb, and Jonathan McDowell, "Nivelir" timeline |