Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.524347E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T02:52:17+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 52687
    NORAD ID 52687
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 67880
    NORAD ID 67880
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3981 STARLINK-36821
    Time of Closest Approach 2026-10-18T23:43:17+0000
    Collision Probability (Pc) 1.524347E-6
    Conjunction Distance (km) 2.045 km
    Relative Speed (km/s) 5.836 km/s
    Conjunction Risk Parameters R (Radial): 1.873 | I (In-track): 0.757 | C (Cross-track): 0.316
    Collision Risk Index (CRI) 0.39
    X Position (km) -5000.783 -5001.905
    Position Y (km) -4507.217 -4508.512
    Position Z (km) 1224.794 1225.909
    Velocity X (km/s) 3.926 0.357
    Velocity Y (km/s) -2.724 1.645
    Velocity Z (km/s) 5.956 7.446

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3981 STARLINK-36821
    Semimajor Axis (a) 6843.354 km 6843.617 km
    Eccentricity (e) 0.000120 0.000203
    Inclination (i) 53.1576° 97.2853°
    RAAN 217.8518° 222.6553°
    Perigee Argument 94.8510° 80.7088°
    Mean Anomaly (M) 265.2629° 279.4384°
    Apogee 466.041 km 466.869 km
    Perigee 464.393 km 464.091 km
    Orbit Epoch 2026-10-18T04:53:45+0000 2026-10-18T06:26:58+0000

    STARLINK-3981 & STARLINK-36821 Collision Probability (Pc) Trend

    STARLINK-3981 & STARLINK-36821 Collision Probability (Pc) TrendNot Available

    STARLINK-3981 & STARLINK-36821 Miss Distance (Miss Distance) Trend

    STARLINK-3981 & STARLINK-36821 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3981Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-36821Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3981Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-36821Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3981

    No nearby objects data