Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.491004E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T03:41:38+0800
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    1 Object 1

    AOE ID 53404
    NORAD ID 53404
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 69341
    NORAD ID 69341
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4509 STARLINK-37781
    Time of Closest Approach 2026-10-20T07:46:55+0000
    Collision Probability (Pc) 1.491004E-6
    Conjunction Distance (km) 2.736 km
    Relative Speed (km/s) 14.412 km/s
    Conjunction Risk Parameters R (Radial): -2.456 | I (In-track): 0.403 | C (Cross-track): -1.134
    Collision Risk Index (CRI) 0.38
    X Position (km) -4066.415 -4065.464
    Position Y (km) 3877.001 3874.619
    Position Z (km) -3925.078 -3924.126
    Velocity X (km/s) -6.001 3.933
    Velocity Y (km/s) -1.983 -2.119
    Velocity Z (km/s) 4.263 -6.177

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4509 STARLINK-37781
    Semimajor Axis (a) 6848.876 km 6843.629 km
    Eccentricity (e) 0.000136 0.000301
    Inclination (i) 53.1586° 97.2881°
    RAAN 173.6872° 320.2463°
    Perigee Argument 87.8703° 87.0311°
    Mean Anomaly (M) 272.2454° 273.1277°
    Apogee 471.672 km 467.553 km
    Perigee 469.806 km 463.431 km
    Orbit Epoch 2026-10-19T02:13:37+0000 2026-10-19T01:05:29+0000

    STARLINK-4509 & STARLINK-37781 Collision Probability (Pc) Trend

    STARLINK-4509 & STARLINK-37781 Collision Probability (Pc) TrendNot Available

    STARLINK-4509 & STARLINK-37781 Miss Distance (Miss Distance) Trend

    STARLINK-4509 & STARLINK-37781 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4509Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-37781Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4509Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-37781Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4509

    No nearby objects data