Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    5.198482E-5
    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 2026-09-04T22:13:49+0000
    Collision Probability (Pc) 5.198482E-5
    Conjunction Distance (km) 0.642 km
    Relative Speed (km/s) 4.723 km/s
    Conjunction Risk Parameters R (Radial): -0.037 | I (In-track): -0.609 | C (Cross-track): 0.196
    Collision Risk Index (CRI) 0.69
    X Position (km) 3125.752 3126.175
    Position Y (km) 2980.95 2980.469
    Position Z (km) -5312.366 -5312.338
    Velocity X (km/s) -3.676 -6.328
    Velocity Y (km/s) 6.51 3.983
    Velocity Z (km/s) 1.491 -1.49

    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