Optical Intersatellite Link (OISL)
The laser-based crosslinks that turn Starlink into a mesh, anchor the SDA Transport Layer, and just made their GPS debut on GPS III SV10 - quietly rewriting how data moves through space.
Launch Date
January 22, 1975
Launch Site
AFWTR
Launch Pad
SLC2W
Launch Vehicle
Delta 2910
NORAD ID
08978
International Designator
1975-004BL
Epoch
Sun, 19 Jul 2026 17:21:23 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
97.79°
Right Ascension
271.52°
Eccentricity
Calculating...
Argument of Perigee
108.81°
Period
96.77 min
Mean Motion
14.88 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Name
DELTA 1 DEB
Alternative Name
deb Delta 107
Type
Status
Owner
GSFC
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
1 08978U 75004BL 26200.72318647 .00000973 00000+0 11115-3 0 9996
2 08978 97.7904 271.5225 0027588 108.8121 251.6091 14.88074813672165
Source: Celestrak
Length
0
Diameter
0
Span
0
Dry Mass
0
Launch Mass
0
Shape
N/A
Radar Cross Section
0.147
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
Unknown
Purpose
Unknown
Mission
Unknown
Manufacturer
Unknown
Life Expectancy
Unknown
Bus
Unknown
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Learn more about satellites and other related topics.
The laser-based crosslinks that turn Starlink into a mesh, anchor the SDA Transport Layer, and just made their GPS debut on GPS III SV10 - quietly rewriting how data moves through space.
Today's brief covers SpaceX's latest Starlink launch, updates on Crew-8's return, and preparations for the SLS Artemis II mission.
Today's highlights include the cancellation of Starship landing plans, Planet Labs' defense expansion, and cutting-edge radiation-hardened tech for space and defense.
Iran calls Kowsar 1.5 a private-sector farming satellite. Its 3.45-meter camera, its sun-synchronous orbit, and the Russian rocket that carried it point somewhere else entirely.
Today's coverage includes the cancellation of DARPA's DRACO nuclear propulsion project, global shifts in Earth observation strategy, and new developments in satellite technology and military collaborations.
Today's brief covers potential roles for commercial satellites in missile defense, SpaceX's new launch site plans at Vandenberg, and partnerships for space nuclear propulsion. Discover updates on military space projects and international defense agreements.
SpaceX successfully launched its 300th Starlink mission, deploying 24 new satellites to further expand its internet service coverage worldwide.
Space Force contracts Viasat and SES for $437M Protected Tactical Satcom-Global program. Four new GEO satellites replace vulnerable single-satellite systems.