Space Brief 4 Sep 2025
Today's briefing covers a surprise launch by Israel, a milestone missile contract for Lockheed Martin, and updates on Indian missile defense strategies.
Launch Date
July 14, 2017
Launch Site
Launch Pad
LC31
Launch Vehicle
Soyuz-2-1A
NORAD ID
42839
International Designator
2017-042Q
Epoch
Sat, 04 Jul 2026 06:00:41 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
97.41°
Right Ascension
5.75°
Eccentricity
Calculating...
Argument of Perigee
295.27°
Period
94.21 min
Mean Motion
15.29 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Name
LEMUR-2-MONSON
Alternative Name
Lemur-2-Monson
Type
Status
Owner
SPIRE
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
1 42839U 17042Q 26185.25047873 .00021683 00000-0 78238-3 0 9999
2 42839 97.4090 5.7483 0005204 295.2682 64.8018 15.28515854490777
Source: Celestrak
Length
0.3
Diameter
0.1
Span
0.3
Dry Mass
4
Launch Mass
4
Shape
Box
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
Lemur FM45
Purpose
Unknown
Mission
Unknown
Manufacturer
SPIREG
Life Expectancy
Unknown
Bus
Cubesat 3U
Configuration
CubeSat (3U)
Motor
None
Equipment
STRATOS (GPS radio occultation payload), SENSE (AIS-receiver), AirSafe (ASD-B payload, #78 and later)
Power System
Solar cells, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
Learn more about satellites and other related topics.
Today's briefing covers a surprise launch by Israel, a milestone missile contract for Lockheed Martin, and updates on Indian missile defense strategies.
Today's brief highlights Umbra Space's contract extension with the NRO, Trump's Space Force ambitions, FibreCoat's new funding targeting defense markets, and key US defense sentiments. Explore notable military and commercial satellite activities.
SpaceX successfully launched 23 Starlink satellites while facing delays in launching the Axiom Space mission due to a propellant leak. Additionally, new US broadband rules favor Starlink's expansion into rural markets.
Space Force confirmed 9 companies won orbital Air Moving Target Indication contracts. Capability shifts airborne surveillance to satellites for expanded coverage and survivability.
SpaceX gears up for significant 2026 launches while a Starlink satellite anomaly provides insights into its operations.
Rocket Lab will acquire Iridium for $8B to challenge SpaceX, whose Starlink constellation holds 10,706 working satellites of 12,390 launched.
Europe's bid to break free from the US launch monopoly. How Sweden's Esrange Space Center is transforming access to space, enabling orbital launches, and strengthening strategic independence for the continent.
Today's briefing covers a last-minute abort of a SpaceX Starlink launch, NASA's preparation for hypersonic tests, Airbus's progress in its space business, and more exciting developments in satellite tracking and reusable spaceflight.