Forecast of Conjunctions: 50 Latest Payloads vs. All (31369) 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
|
|
2026-09-21 09:39:54.270
|
30322
|
FENGYUN 1C DEB
|
100689
|
SENTINEL-3C
|
2.184
|
-2.180, 0.038, -0.120
|
13.6867
|
|
2026-09-21 09:50:44.874
|
2828
|
GGSE 4
|
100701
|
QIANFAN-248
|
4.910
|
4.876, 0.153, 0.561
|
14.2445
|
|
2026-09-21 09:59:01.445
|
29930
|
FENGYUN 1C DEB
|
100700
|
QIANFAN-247
|
4.843
|
2.931, 1.148, -3.680
|
14.0654
|
|
2026-09-21 10:05:25.115
|
59999
|
METEOR 2-20 DEB
|
100699
|
QIANFAN-246
|
3.039
|
-2.985, -0.366, 0.436
|
11.3057
|
|
2026-09-21 10:08:14.454
|
54251
|
OBJECT A
|
100637
|
STARLINK-38422
|
4.918
|
-4.727, 0.157, 1.348
|
15.3142
|
|
2026-09-21 10:26:53.065
|
100268
|
STARLINK-38129
|
100620
|
STARLINK-38278
|
4.476
|
-3.764, 1.898, -1.505
|
9.5708
|
|
2026-09-21 10:28:23.374
|
4629
|
COSMOS 375 DEB
|
100611
|
PLATFORM-6
|
3.638
|
-1.349, -2.490, 2.284
|
10.0178
|
|
2026-09-21 10:42:22.383
|
2828
|
GGSE 4
|
100699
|
QIANFAN-246
|
0.793
|
0.545, -0.157, 0.553
|
14.2339
|
|
2026-09-21 11:05:18.724
|
63084
|
STARLINK-32908
|
100563
|
ELECTRON KICK STAGE
|
3.878
|
2.259, 2.432, 2.006
|
9.5978
|
|
2026-09-21 11:06:56.195
|
58879
|
STARLINK-31296
|
100688
|
SES MPOWER-F13
|
0.753
|
-0.415, -0.609, -0.154
|
5.2895
|
|
|
|
|
|
|
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.
|
|
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.
|
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.
|
|
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.
|