Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    9.719953E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T00:40:35+0800
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    1 Object 1

    AOE ID 49441
    NORAD ID 49441
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 53720
    NORAD ID 53720
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3128 STARLINK-4642
    Time of Closest Approach 2026-09-04T07:22:45+0000
    Collision Probability (Pc) 9.719953E-7
    Conjunction Distance (km) 2.403 km
    Relative Speed (km/s) 4.733 km/s
    Conjunction Risk Parameters R (Radial): 0.386 | I (In-track): 2.255 | C (Cross-track): 0.733
    Collision Risk Index (CRI) 0.35
    X Position (km) -2966.138 -2964.586
    Position Y (km) -3127.294 -3129.102
    Position Z (km) 5301.968 5302.266
    Velocity X (km/s) 4.006 6.536
    Velocity Y (km/s) -6.332 -3.663
    Velocity Z (km/s) -1.49 1.489

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3128 STARLINK-4642
    Semimajor Axis (a) 6840.870 km 6840.980 km
    Eccentricity (e) 0.000161 0.000131
    Inclination (i) 53.1610° 53.1592°
    RAAN 124.8151° 169.7095°
    Perigee Argument 91.1455° 80.2539°
    Mean Anomaly (M) 268.9732° 279.8612°
    Apogee 463.837 km 463.742 km
    Perigee 461.629 km 461.944 km
    Orbit Epoch 2026-09-01T22:39:01+0000 2026-09-02T01:53:51+0000

    STARLINK-3128 & STARLINK-4642 Collision Probability (Pc) Trend

    STARLINK-3128 & STARLINK-4642 Collision Probability (Pc) TrendNot Available

    STARLINK-3128 & STARLINK-4642 Miss Distance (Miss Distance) Trend

    STARLINK-3128 & STARLINK-4642 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3128Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4642Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3128Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4642Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3128

    No nearby objects data