Too many warnings
Unranked alerts eat analyst time. The important ones get lost when the clock is short.
Keep your satellites safe in crowded orbits
Know which close approaches matter — and what to do next.
Kessler Zero turns tracking data into ranked collision warnings and move options. The system works autonomously; a person still approves every action.
Fewer noisy alerts. Fuel spent only when it is worth it. A clear record of why you decided.
Illustrated orbit view · hover objects to inspect
The problem
More warnings do not make operations safer.
Teams need to know which close approaches are real, whether a move is worth the fuel, and how to show why they decided. Without that, a collision, wasted fuel, or a missing paper trail is a real risk.
Hard to know when to move
A burn that lowers collision risk can still shorten the mission if fuel, follow-on close approaches, and recovery time are judged separately.
No single record
Tracking, health, and compliance notes often live in different places, so it is hard to reconstruct the decision later.
Kessler Zero gives you one ranked, explainable path from data to a decision you can stand behind.
Who this is for
One picture of orbit. Three jobs it supports.
Pick the outcome your team is accountable for.
Commercial Fleet Operators
Keep the constellation flying without spending fuel on moves you did not need.
Autonomous close-approach scoringMove options that account for fuelFleet-level ranking of what to look at first
Defense & Government Agencies
A clear picture of objects and threats in orbit, from the data you already trust.
Object and threat monitoringRanked close-approach alertsA decision record you can review later
Space Insurers & Underwriters
Price orbital risk using evidence you can trace, not a black box.
Clear orbital risk scoresExposure you can inspectRecords that support underwriting review
What we offer
Three ways to start — each with a clear result.
You get a defined outcome, a simple next step, and something you can take back to your team. Software ranks and recommends; a person still approves the action.
Orbital Audit & Risk Assessment
We look at your fleet, how you check for close approaches, when you move, and how you document it. You leave with a ranked list of risks and a written action plan.
Risk list · process review · action planBook a Risk Review →Autonomous Conjunction Assessment Feeds
We take in tracking data, rank close approaches, and send explainable collision-risk scores into your operations workflow. You stay in control of what happens next.
Live feed · event scores · decision recordSee How It Works →Maneuver Optimization Protocols
We compare possible moves against collision risk, fuel cost, mission limits, and whether the move creates a new close approach — so you can choose with eyes open.
Move options · trade-offs · decision guideDiscuss Mission Constraints →What the system can do
Built to sit next to the tools you already use.
Today we ingest TLE tracking data, score close approaches, and keep a record of each assessment. We are integrating other data sources as well soon.
Supported format
- TLE — Two-Line Element sets (standard satellite orbit data)
Processing
- Ingest tracking data as it arrives
- Turn close approaches into ranked events
- Refresh risk scores as data updates
- Keep a decision log you can review
Data today
- TLE orbit catalogs
- Operator-provided TLE files
- Ranked close-approach alerts
- Human approval before any move
< 5 minNew data to a scored assessment
150k+Events tracked per day
Every 10 minScores refresh so you can stay ahead
TLE is the live interface today.
How we work together
From a look at your situation to day-to-day decisions, in three steps.
Start With a Risk ReviewAudit
We map your satellites, your data, when you treat a warning as real, what moves you can make, and what you need on record.
Integrate
We connect your approved tracking data, clean up the events, and set ranking and escalation rules to match your mission.
Operate
You get ranked assessments, compare response options, and keep a clear record of the decision. A person still approves the action.
How a decision unfolds
A high-risk close approach in low Earth orbit enters the decision window.
Follow one event from first data through ranked options to an approved response.
Bring the event together
New TLE data is turned into one event record, with a note of where the data came from.
Score the risk again
Uncertainty and screening rules are checked before the event is escalated.
Compare move options
Possible responses are ranked by how much they cut risk, how much fuel they use, mission interruption, and whether they create a new close approach.
Record the decision
The approved response and supporting evidence are kept as an operational record. A person still approves the action.
Illustrative example — not a customer result.
Compliance alignment
Make every risk decision easy to reconstruct.
Kessler Zero is built so you can keep evidence and operating notes in line with widely used debris-mitigation and space-data practices. That is not the same as a live data feed.
IADC
Guidance on reducing debris and planning what happens at the end of a mission.
FCC / FAA
Support for the documents and deorbit evidence a specific mission may need.
Space Data Association
Practices for sharing close-approach data and coordinating with other operators.
CCSDS
Common ways the industry exchanges orbit and close-approach information.
Alignment does not mean regulatory approval or legal certification. Requirements are assessed for each mission and jurisdiction.
Take the first step
See how your tracking data becomes a decision you can act on.
Bring how you check for close approaches today, a mission profile, or a risk question. We will map the fastest honest path to a working evaluation.