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Starlink satellite close conjunction forecast

Results from latest analysis of positions : searching for near misses (< 1 km) over the next 24 hours. Includes nearest approaches to ISS and CSS regardless of distance

close conjunctions forecast
UTC Distance (km) Obj1 Obj2 ΔAlt kmh

2025-05-30T15:06
100.5774558748274
(CSS)
99.941163

2025-05-30T15:21
66.25025544
(ISS)
6228164.47376

2025-05-30T15:37
0.74947179478610.2813394

2025-05-30T16:49
0.52050183508480.2410298

2025-05-30T16:59
0.80061973621250.0810291

2025-05-30T18:06
0.61053018541670.349605

2025-05-30T18:17
0.80147148629930.0220115

2025-05-30T18:22
0.42050848536360.286189

2025-05-30T19:41
0.62253556547930.604295

2025-05-30T20:12
0.98656403584430.9512255

2025-05-30T20:25
0.32748276483530.287589

2025-05-30T20:34
0.44761728630960.062543

2025-05-30T20:58
0.08662515638810.0429039

2025-05-30T21:01
0.34451881539050.096812

2025-05-30T21:21
0.64651875539000.074498

2025-05-30T21:41
0.63145746628930.6212150

2025-05-30T23:45
0.39149164556400.3920879

2025-05-31T00:11
0.93262221638820.1724210

2025-05-31T00:31
0.56562879639950.489303

2025-05-31T00:37
0.55146725467400.5010486

2025-05-31T00:40
0.25952365526880.268761

2025-05-31T00:41
0.59854844587390.0210637

2025-05-31T01:48
0.87258171589310.5824254

2025-05-31T02:34
0.80959732621430.14388

Forecast completed at: Fri, 30 May 2025 03:31:37 PM UTC

Twice a day the latest TLEs (fixes) are propagated forward if necessary by 1/100th of a second steps to identify the closest any pair of satellites will be to each other. Since TLEs contain a small amount of position uncertainty and the orbit propagation model is also slightly imperfect the identified near pass may be inaccurate. In addition, satellites undergoing thrust currently will not be placed correctly hours into the future.