Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.646354E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T08:05:55+0800
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    1 Object 1

    AOE ID 53847
    NORAD ID 53847
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 56337
    NORAD ID 56337
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4777 STARLINK-5561
    Time of Closest Approach 2026-09-13T19:59:43+0000
    Collision Probability (Pc) 1.646354E-6
    Conjunction Distance (km) 2.326 km
    Relative Speed (km/s) 10.571 km/s
    Conjunction Risk Parameters R (Radial): -2.284 | I (In-track): -0.307 | C (Cross-track): -0.311
    Collision Risk Index (CRI) 0.39
    X Position (km) -2026.699 -2026.367
    Position Y (km) -3753.592 -3752.504
    Position Z (km) 5435.902 5433.873
    Velocity X (km/s) 7.167 1.409
    Velocity Y (km/s) -2.262 5.892
    Velocity Z (km/s) 1.107 4.583

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4777 STARLINK-5561
    Semimajor Axis (a) 6917.902 km 6912.575 km
    Eccentricity (e) 0.000161 0.000174
    Inclination (i) 53.1594° 97.2847°
    RAAN 179.3066° 248.8705°
    Perigee Argument 83.7370° 98.0799°
    Mean Anomaly (M) 276.3805° 328.6906°
    Apogee 540.877 km 535.642 km
    Perigee 538.653 km 533.234 km
    Orbit Epoch 2026-09-11T12:00:12+0000 2026-09-11T14:00:03+0000

    STARLINK-4777 & STARLINK-5561 Collision Probability (Pc) Trend

    STARLINK-4777 & STARLINK-5561 Collision Probability (Pc) TrendNot Available

    STARLINK-4777 & STARLINK-5561 Miss Distance (Miss Distance) Trend

    STARLINK-4777 & STARLINK-5561 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4777Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5561Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4777Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5561Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4777

    No nearby objects data