Launch Date
December 27, 1987
Launch Site
Launch Pad
LC200/39
Launch Vehicle
Proton-K/DM-2
NORAD ID
18718
International Designator
1987-109D
Epoch
Fri, 03 Jul 2026 23:55:38 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
10.86°
Right Ascension
326.55°
Eccentricity
Calculating...
Argument of Perigee
280.33°
Period
1428.10 min
Mean Motion
1.01 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Name
SL-12 R/B(2)
Alternative Name
Blok DM-2 No. 31L
Type
Status
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
1 18718U 87109D 26184.99697550 -.00000313 00000-0 00000-0 0 9999
2 18718 10.8628 326.5506 0067356 280.3336 154.1230 1.00833191132234
Source: Celestrak
Length
6.3
Diameter
3.7
Span
6.3
Dry Mass
2440
Launch Mass
17490
Shape
Cyl
Radar Cross Section
2.7507
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
11S861 No. 31L
Purpose
Unknown
Mission
Unknown
Manufacturer
NPOE
Life Expectancy
Unknown
Bus
Blok DM
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Learn more about satellites and other related topics.
Today's brief covers the Army's move to create a space career field for enlisted soldiers, Terran Orbital's involvement in a Space Force tech program, advancements in missile warning systems, a first flight test by Inversion Space, and more.
Space highlights include a debut launch of ZhuQue-2E, Firefly's lunar lander timeline, semiconductor funding for satellites, and ISS debris avoidance.
Today's briefing covers Blue Origin's New Glenn nearing its first launch, SpaceX's 400th Falcon 9 mission with Starlink satellites, advancements in space-based weather prediction, and more.
This week: China's Long March 10B debuted successfully, SpaceX merged with xAI, and Starlink topped 10,775 satellites in orbit.
SpaceX achieves a milestone with its 350th successful mission, including a significant Starlink launch, while Starship advances in testing. Meanwhile, SpaceX boosts SiriusXM's satellite fleet and industry competitors make strides.
SpaceX's Fram2 mission marks a historic first in polar orbit travel, while DARPA unexpectedly detects Falcon 9 reentry using atmospheric listening.
SpaceX readies Starlink 6-96 launch of 29 satellites from Cape Canaveral. Thermal Protection System evaluations underway at Starbase for next Starship prototypes. SpaceX IPO expected to reshape market.
Sixty years ago, a pioneering spacecraft called Ranger 8 captured thousands of detailed photographs of the lunar surface before intentionally crashing into the Moon, helping pave the way for humanity's first steps on another world
