Forecast of Conjunctions: 100 Latest Payloads vs. All (28744) Objects

Time of Closest Approach (TCA), UTC NORAD ID 1 Object Name 1 NORAD ID 2 Object Name 2 Distance at TCA, km RIC Distance, km Rel.Speed
km/s
2025-12-17 05:32:53.504 23590 ATLAS 2 CENTAUR R/B 66879 STARLINK-35749 1.621 0.074, -1.258, -1.020 4.4712
2025-12-17 06:03:45.984 30493 FENGYUN 1C DEB 66957 HULIANWANG DIGUI-118 1.141 -1.112, -0.047, -0.253 14.4920
2025-12-17 06:18:21.427 52575 STARLINK-3920 66860 STARLINK-35987 4.776 4.409, 1.806, 0.327 2.6349
2025-12-17 06:31:39.161 54561 CZ-6A DEB 66920 HULIANWANG DIGUI-110 4.968 3.982, -2.245, -1.947 9.6596
2025-12-17 06:56:06.093 34340 COSMOS 2251 DEB 66922 HULIANWANG DIGUI-112 4.196 -2.732, -1.610, 2.748 12.9097
2025-12-17 07:03:56.733 52575 STARLINK-3920 66860 STARLINK-35987 4.490 4.101, 1.803, -0.311 2.6296
2025-12-17 08:07:41.370 54414 CZ-6A DEB 66917 HULIANWANG DIGUI-107 4.361 -4.267, -0.436, -0.787 13.1682
2025-12-17 08:27:21.475 49318 OBJECT D 66916 HULIANWANG DIGUI-106 3.021 -0.786, -2.477, -1.541 7.8209
2025-12-17 09:49:20.544 13874 SSC 66954 HULIANWANG DIGUI-115 1.520 -1.509, -0.107, 0.140 13.9749
2025-12-17 11:41:57.492 13492 KIKU 4 (ETS 3) 66953 HULIANWANG DIGUI-114 3.957 -1.775, 3.297, -1.278 5.3349
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).
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.
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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