Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.140691E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T12:48:17+0800
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    1 Object 1

    AOE ID 51993
    NORAD ID 51993
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 52605
    NORAD ID 52605
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3648 STARLINK-4000
    Time of Closest Approach 2026-09-14T02:59:21+0000
    Collision Probability (Pc) 1.140691E-6
    Conjunction Distance (km) 2.927 km
    Relative Speed (km/s) 10.597 km/s
    Conjunction Risk Parameters R (Radial): 2.732 | I (In-track): 0.759 | C (Cross-track): -0.726
    Collision Risk Index (CRI) 0.36
    X Position (km) 2423.043 2424.961
    Position Y (km) -5144.916 -5146.524
    Position Z (km) 3788.203 3789.72
    Velocity X (km/s) 3.725 6.233
    Velocity Y (km/s) 5.009 -0.317
    Velocity Z (km/s) 4.406 -4.405

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3648 STARLINK-4000
    Semimajor Axis (a) 6837.889 km 6840.837 km
    Eccentricity (e) 0.000120 0.000128
    Inclination (i) 53.1602° 53.1592°
    RAAN 276.2697° 159.0119°
    Perigee Argument 89.8961° 91.5250°
    Mean Anomaly (M) 270.2178° 268.5898°
    Apogee 460.570 km 463.573 km
    Perigee 458.934 km 461.827 km
    Orbit Epoch 2026-09-11T18:33:32+0000 2026-09-11T04:03:11+0000

    STARLINK-3648 & STARLINK-4000 Collision Probability (Pc) Trend

    STARLINK-3648 & STARLINK-4000 Collision Probability (Pc) TrendNot Available

    STARLINK-3648 & STARLINK-4000 Miss Distance (Miss Distance) Trend

    STARLINK-3648 & STARLINK-4000 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3648Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4000Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3648Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4000Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3648

    No nearby objects data