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Two curved monitors on a desk in a dark, red-lit room. The left screen shows a night-side globe crossed by orbital tracks beside small telemetry panels; the right shows a parametric decay analysis, three sets of altitude-against-time curves fanning downward under headings for strong, average and weak space-weather cases.

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Orbit analysis

The Orbit Decay Report

a decay and re-entry assessment for one object, against the rule you have to answer to

Request an analysisBOOK A CALL

GET ANSWER TO QUESTIONS

  • Will it come down inside the limit, and by when?
  • Which rule am I being judged against, and does this report answer it?
  • How wide is the uncertainty, and what moves the answer?
Standard
€1,580 per object
Introductory
€790 per objectintroductory discount 50%, valid until the end of 2026

How our predictions compared with what happened

THE TEN-SECTION REPORT

Regulators require operators to show a satellite will leave orbit within a legal limit after its mission ends. This is the analysis that shows it.

Inside the report

  1. Object & assumptions register
  2. Orbit state & data provenance
  3. Lifetime prediction · nominal profile + uncertainty band across low / mean / high solar-activity scenarios
  4. Re-entry epoch window
  5. Compliance verdict · pass / fail / margin against the named rule
  6. Sensitivity analysis
  7. Options outline (if non-compliant)
  8. Methodology & validation note
  9. Engineer sign-off
  10. Machine-readable annex (CSV/JSON)
A window, not a date ILLUSTRATIVE
A window, not a dateAn altitude-against-time chart carrying no numbers of any kind. Three decay traces leave the same starting altitude and fan apart, one for each solar-activity scenario: the high-activity trace falls steepest and reaches the ground first, the low-activity trace falls slowest and reaches it last, and mean runs between them. The area between the outer two traces is shaded, and it closes to a point at the right-hand side where the last trace lands.HIGHMEANLOW

Three solar-activity scenarios, three decay traces. High activity means more drag and an earlier re-entry; low activity means a later one. The shaded span between them is the window, and its width is physics we cannot know in advance rather than imprecision we could work harder to remove.

This report is engineering evidence supporting your compliance demonstration.

WHAT YOU SEND

NORAD ID and five numbers

Where a value is unknown, we proceed on a documented default, stated in the report.

The five numbers5
  1. Mass
  2. Dimensions or cross-sectional area
  3. Attitude assumption · stabilised or tumbling
  4. Disposal intent · natural decay, or planned manoeuvre
  5. Regulatory target · which rule the report answers (FCC 5-year · ESA Zero Debris / ISO 24113 · national regime)

A RECORD OF ACCURACY

The VERONIKA CubeSat shown twice against black: on the left the assembled satellite with dark solar panels in a magenta-anodised frame, on the right the same bus opened to show its stacked circuit boards and deployed antenna wires. The VERONIKA wordmark and its blue-and-magenta mark sit between them.

Veronika 2023-174F; 58261

Predicted in November 2024: 4 June 2025 under strong space weather, 8 October 2025 under average conditions. With solar activity running high in early 2025, we recalculated in April 2025, four months out. That run came within three days of the actual re-entry on 15 August 2025.

Recalculated April 2025, four months out

Re-entered 15 August 2025

Delivered
The LASARSAT CubeSat photographed on a stand against black, its gold-anodised structural frame holding dark solar panels with a row of small components across the middle. The LASARSAT wordmark above it is crossed by two red laser marks.

LASARSAT 2024-2470; 62391

Predicted in April 2025: end-of-life window across all scenarios from April 2026 to December 2029, and under average conditions March 2027, with a 3-sigma band from December 2026 to June 2027. Seventeen months later, on 18 September 2026, the measured semi-major axis was about 410 km, against about 406 km predicted for that date. At its current decay of about 300 m a day, that is about 13 days behind the prediction after seventeen months, about 2.5 percent of the time elapsed.

Central case March 2027

Still in orbit · checked 18 September 2026

Delivered

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The catalogue number of the object you want assessed.

We will confirm exactly which figures we need before we start. See what you send, above.