Forecast of Conjunctions: 50 Latest Payloads vs. All (32067) Objects
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Time of Closest Approach (TCA), UTC
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NORAD ID 1
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Object Name 1
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NORAD ID 2
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Object Name 2
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Distance at TCA, km
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RIC Distance, km
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Rel.Speed
km/s
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2026-10-13 04:20:23.079
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52500
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STARLINK-3866
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100901
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ELEMENT-1
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3.892
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-2.939, 0.960, -2.364
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14.0963
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2026-10-13 04:55:17.519
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29856
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FENGYUN 1C DEB
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100825
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YAOGAN-40 O4C
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3.147
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-2.858, 1.268, -0.358
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3.7226
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2026-10-13 05:07:52.019
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52500
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STARLINK-3866
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100901
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ELEMENT-1
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4.620
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-1.519, -1.649, -4.040
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14.0624
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2026-10-13 05:11:19.624
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67102
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STARLINK-36255
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100870
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STARLINK-40080
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3.840
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-3.736, -0.730, -0.505
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8.7497
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2026-10-13 06:02:01.629
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57456
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YAOGAN-36 05C
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100894
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ICEYE-X87
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4.570
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3.220, 2.402, -2.178
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10.2294
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Our orbit propagation model is based on SGP4/SDP4 and uses data sourced from space-track.org. Object 1 and Object 2 are arranged by their NORAD ID (NORAD_CAT_ID).
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The "Within ellipsoid" option allows you to check if the predicted miss distance is within the RIC (Radial, In-track, Cross-track) ellipsoid, centered on either Object 1 or Object 2 at TCA, with specified semi-axis lengths.
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To exclude long-lasting conjunctions of ride-sharing satellites, you can use the "Relative Speed > 0.01 km/s" filter. Additionally, connected modules of ISS and CSS are not included in the forecast. Some ride-sharing satellites may also be temporarily excluded from the forecast.
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Gray background indicates a >1 km difference between the latest published position of a conjunction object and the position propagated from the TLE used for conjunction detection, indicating that the record may no longer be current.
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If comparison of the velocity vector and Keplerian orbital parameters from the latest published TLE with the corresponding values propagated from the TLE used for conjunction detection shows a deviation exceeding ±3× the background RMSE, indicating probable maneuvering, the following symbols identify the orbital parameter and direction of the probable change:
↑ ↓ - semimajor axis increase/decrease
↺ ↻ - inclination increase/decrease
→ ← - RAAN increase/decrease
↗ - probable maneuvering detected based on a propagated-versus-published velocity-vector difference exceeding 3× the background RMSE, while the semimajor axis, inclination, and RAAN deviations each remain within ±3× their respective background RMSEs.
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Please note that the "Selected Objects vs. All" option and Email Notifications are only available for registered users, with registration currently being free of charge.
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