Proton / UR-500 K/D — mission imagery
Back to launches
Failure

Mars-2d

Proton / UR-500 K/DSoviet Space Program81/23 (81L)
Monday, May 10, 1971 · 04:58 PM UTC
Add to calendar

This mission is complete.

Mission Brief

Mars orbiter and lander

PayloadMars-2d
OrbitMars Orbit
CustomerSoviet Space Program
Stages4
Pad81/23 (81L), Baikonur Cosmodrome, Republic of Kazakhstan

Mission Timeline

14 / 14100%

Ground vector

Launch site

Site locked

81/23 (81L)

Baikonur Cosmodrome, Republic of Kazakhstan

Global range
SITE LOCK
Latitude
46.074°N
Longitude
62.978°E

Range Weather

Launch commit criteria

Clear
Watch
TrackingNo active constraints
Weather Rules

Tracking no weather issues at this time.

Primary concern
No weather issues
Rule count
0
Temperature
Not reported
Surface wind
Not reported
Window

04:58 PM UTC - 04:58 PM UTC

Vehicle

Proton / UR-500 K/D

Profile →
Height58.2 m
LEO Payload21,000 kg
Launches2,456
Successes2,288

Provider

Soviet Space Program

Profile →

Schedule History

No meaningful launch-time or status changes recorded.

Related Launches

Zhuque-3 rocketManifest / 01
Go

Flight 2

Zhuque-3
ProviderLandSpace
PadLaunch Area 96B
DateAug 18, 2026
PrecisionAbout 11:35 PM UTC
Schedule watchTracking updates
T– about <1hWindow opens 11:27 PM UTC
Falcon 9 Block 5 rocketManifest / 02
Go

Starlink Group 17-50

Falcon 9 Block 5
ProviderSpaceX
PadSpace Launch Complex 4E
DateAug 19, 2026
Time (UTC)03:46 AM UTC
Launch clockT– to liftoff
T-
00
:
03
:
50
:
39
Confirmed to the minute
Proton K/DM-2 rocketManifest / 03
Success

Raduga 28

Proton K/DM-2
ProviderSoviet Space Program
Pad81/23 (81L)
DateDec 19, 1991
Time (UTC)11:41 AM UTC
Success