Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    3.10821E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T03:41:39+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 61903
    NORAD ID 61903
    Object Type UNKNOWN
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-4509 OBJECT K
    Time of Closest Approach 2026-10-20T06:35:16+0000
    Collision Probability (Pc) 3.10821E-6
    Conjunction Distance (km) 1.929 km
    Relative Speed (km/s) 14.532 km/s
    Conjunction Risk Parameters R (Radial): 1.886 | I (In-track): -0.118 | C (Cross-track): 0.388
    Collision Risk Index (CRI) 0.45
    X Position (km) -5686.914 -5688.481
    Position Y (km) -1493.922 -1493.961
    Position Z (km) 3503.539 3504.663
    Velocity X (km/s) 4.067 -4.032
    Velocity Y (km/s) -4.44 0.123
    Velocity Z (km/s) 4.693 -6.475

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4509 OBJECT K
    Semimajor Axis (a) 6848.876 km 6842.801 km
    Eccentricity (e) 0.000136 0.000784
    Inclination (i) 53.1586° 97.4002°
    RAAN 173.6872° 9.2660°
    Perigee Argument 87.8703° 321.4458°
    Mean Anomaly (M) 272.2454° 38.6224°
    Apogee 471.672 km 470.030 km
    Perigee 469.806 km 459.298 km
    Orbit Epoch 2026-10-19T02:13:37+0000 2026-10-19T06:27:14+0000

    STARLINK-4509 & OBJECT K Collision Probability (Pc) Trend

    STARLINK-4509 & OBJECT K Collision Probability (Pc) TrendNot Available

    STARLINK-4509 & OBJECT K Miss Distance (Miss Distance) Trend

    STARLINK-4509 & OBJECT K Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4509Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    OBJECT KMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4509Collision Probability Trend

    Object 1 Probability TrendNot Available

    OBJECT KCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4509

    No nearby objects data