SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Momentus logo Momentus Operates orbital service vehicles and manufactures satellite buses for in-space transportation, hosted payloads, and proximity operations vs Orbital Sidekick Operates a constellation of hyperspectral imaging satellites and delivers spectral intelligence for energy, mining, agriculture, and defense monitoring Orbital Sidekick logo
HEAD-TO-HEAD1 shared sector
Momentus Orbital Sidekick
Founded 2017 2016
Headquarters San Jose, California San Francisco, California
Type public private
Status operating operating
Employees 41 24
Total funding $55.4M
Latest round Venture
Sectors Space Transportation & Logistics, In-Orbit Servicing & Assembly, Satellite Manufacturing Earth Observation & Remote Sensing, Geospatial Intelligence & Analytics, Satellite Manufacturing
Products listed 3 4
Federal contracts
Launches
Leaders listed John C. Rood, Rob Schwarz, Lon Ensler Dan Katz, Tushar Prabhakar, Spencer Hill
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Momentus and Orbital Sidekick compare?

Both companies work in Satellite Manufacturing. Momentus was founded in 2017 and Orbital Sidekick in 2016.

Which is larger, Momentus or Orbital Sidekick?

Momentus reports the larger workforce, with 41 employees versus 24.

Numbers refresh on every render against the live Space Index database. Federal contract data from USAspending.gov; launches from LaunchLibrary2.