Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.849501E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T00:05:36+0800
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    1 Object 1

    AOE ID 53149
    NORAD ID 53149
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 53827
    NORAD ID 53827
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4021 STARLINK-4764
    Time of Closest Approach 2026-10-21T16:57:15+0000
    Collision Probability (Pc) 1.849501E-6
    Conjunction Distance (km) 2.261 km
    Relative Speed (km/s) 11.636 km/s
    Conjunction Risk Parameters R (Radial): 1.954 | I (In-track): 0.734 | C (Cross-track): 0.872
    Collision Risk Index (CRI) 0.4
    X Position (km) -6203.914 -6202.376
    Position Y (km) -1305.86 -1304.373
    Position Z (km) -2580.02 -2579.289
    Velocity X (km/s) -1.124 3.158
    Velocity Y (km/s) -5.284 -4.383
    Velocity Z (km/s) 5.39 -5.391

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4021 STARLINK-4764
    Semimajor Axis (a) 6840.880 km 6838.339 km
    Eccentricity (e) 0.000127 0.000244
    Inclination (i) 53.1580° 53.1607°
    RAAN 216.9384° 2.5180°
    Perigee Argument 99.6398° 76.5232°
    Mean Anomaly (M) 260.4748° 283.6042°
    Apogee 463.612 km 461.870 km
    Perigee 461.874 km 458.534 km
    Orbit Epoch 2026-10-20T03:33:29+0000 2026-10-19T21:52:00+0000

    STARLINK-4021 & STARLINK-4764 Collision Probability (Pc) Trend

    STARLINK-4021 & STARLINK-4764 Collision Probability (Pc) TrendNot Available

    STARLINK-4021 & STARLINK-4764 Miss Distance (Miss Distance) Trend

    STARLINK-4021 & STARLINK-4764 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4021Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4764Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4021Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4764Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4021

    No nearby objects data