Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.82589E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T16:03:51+0800
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    1 Object 1

    AOE ID 53391
    NORAD ID 53391
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 64427
    NORAD ID 64427
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4521 STARLINK-34480
    Time of Closest Approach 2026-09-05T14:45:24+0000
    Collision Probability (Pc) 1.82589E-6
    Conjunction Distance (km) 1.898 km
    Relative Speed (km/s) 5.818 km/s
    Conjunction Risk Parameters R (Radial): 1.473 | I (In-track): -1.106 | C (Cross-track): -0.453
    Collision Risk Index (CRI) 0.4
    X Position (km) 2810.411 2809.924
    Position Y (km) -3107.249 -3108.2
    Position Z (km) -5425.14 -5426.707
    Velocity X (km/s) 6.323 6.516
    Velocity Y (km/s) 4.156 -0.847
    Velocity Z (km/s) 0.896 3.858

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4521 STARLINK-34480
    Semimajor Axis (a) 6848.886 km 6882.728 km
    Eccentricity (e) 0.000146 0.000315
    Inclination (i) 53.1621° 69.9996°
    RAAN 41.5286° 344.7199°
    Perigee Argument 67.0918° 275.7864°
    Mean Anomaly (M) 293.0237° 65.0370°
    Apogee 471.749 km 506.761 km
    Perigee 469.749 km 502.421 km
    Orbit Epoch 2026-09-02T18:12:27+0000 2026-09-03T22:00:02+0000

    STARLINK-4521 & STARLINK-34480 Collision Probability (Pc) Trend

    STARLINK-4521 & STARLINK-34480 Collision Probability (Pc) TrendNot Available

    STARLINK-4521 & STARLINK-34480 Miss Distance (Miss Distance) Trend

    STARLINK-4521 & STARLINK-34480 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4521Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-34480Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4521Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-34480Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4521

    No nearby objects data