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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

2025-01-20T23:26
0.51152547532230.5123444

2025-01-20T23:29
24.59525544
(ISS)
5930024.59380

2025-01-20T23:53
0.32752606538980.027270

2025-01-21T00:04
0.91847563587830.04200

2025-01-21T00:41
0.75646543581520.2418792

2025-01-21T01:02
0.36750192538630.366625

2025-01-21T01:41
31.94548274
(CSS)
6222828.715539

2025-01-21T02:10
0.15348137485800.1510671

2025-01-21T02:28
0.74958785615920.6121130

2025-01-21T02:48
0.32551131518710.3214227

2025-01-21T04:11
0.70151815547890.344113

2025-01-21T04:50
0.33351993521050.336214

2025-01-21T06:34
0.82746141473900.6218925

2025-01-21T07:32
0.52745747508120.5112305

2025-01-21T08:08
0.92053016533950.192595

2025-01-21T08:17
0.15353249533950.0617686

2025-01-21T09:18
0.21653062536840.1819194

2025-01-21T09:56
0.69653726539930.065124

2025-01-21T10:09
0.84447733484500.352932

2025-01-21T10:14
0.56058886602620.5214347

2025-01-21T10:26
0.64150177539910.395046

Forecast completed at: Mon, 20 Jan 2025 10:52:19 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.