Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    8.459229E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T09:37:50+0800
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    1 Object 1

    AOE ID 53488
    NORAD ID 53488
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 61518
    NORAD ID 61518
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4421 STARLINK-32172
    Time of Closest Approach 2026-09-12T13:19:24+0000
    Collision Probability (Pc) 8.459229E-7
    Conjunction Distance (km) 2.931 km
    Relative Speed (km/s) 6.221 km/s
    Conjunction Risk Parameters R (Radial): -2.93 | I (In-track): 0.024 | C (Cross-track): 0.004
    Collision Risk Index (CRI) 0.34
    X Position (km) 6245.336 6248.021
    Position Y (km) 1149.693 1150.174
    Position Z (km) 2550.37 2551.444
    Velocity X (km/s) -2.593 -3.037
    Velocity Y (km/s) -1.538 4.455
    Velocity Z (km/s) 7.014 5.405

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4421 STARLINK-32172
    Semimajor Axis (a) 6843.693 km 6848.862 km
    Eccentricity (e) 0.000097 0.000130
    Inclination (i) 97.2851° 53.1629°
    RAAN 12.1497° 357.4903°
    Perigee Argument 90.4992° 94.5952°
    Mean Anomaly (M) 269.6362° 265.5198°
    Apogee 466.218 km 471.612 km
    Perigee 464.894 km 469.838 km
    Orbit Epoch 2026-09-11T07:28:16+0000 2026-09-11T13:42:46+0000

    STARLINK-4421 & STARLINK-32172 Collision Probability (Pc) Trend

    STARLINK-4421 & STARLINK-32172 Collision Probability (Pc) TrendNot Available

    STARLINK-4421 & STARLINK-32172 Miss Distance (Miss Distance) Trend

    STARLINK-4421 & STARLINK-32172 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4421Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-32172Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4421Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-32172Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4421

    No nearby objects data