Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    5.450536E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T03:04:42+0800
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    1 Object 1

    AOE ID 53423
    NORAD ID 53423
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 62661
    NORAD ID 62661
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4539 FLOCK 4G 2
    Time of Closest Approach 2026-10-21T23:22:33+0000
    Collision Probability (Pc) 5.450536E-6
    Conjunction Distance (km) 1.582 km
    Relative Speed (km/s) 14.037 km/s
    Conjunction Risk Parameters R (Radial): 1.467 | I (In-track): -0.234 | C (Cross-track): 0.543
    Collision Risk Index (CRI) 0.5
    X Position (km) -4492.036 -4492.992
    Position Y (km) -1986.936 -1986.819
    Position Z (km) 4763.296 4764.55
    Velocity X (km/s) 5.256 -5.339
    Velocity Y (km/s) -4.65 -0.865
    Velocity Z (km/s) 3.008 -5.385

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4539 FLOCK 4G 2
    Semimajor Axis (a) 6848.868 km 6847.851 km
    Eccentricity (e) 0.000152 0.000286
    Inclination (i) 53.1594° 97.3923°
    RAAN 170.6423° 13.8592°
    Perigee Argument 89.5761° 223.3675°
    Mean Anomaly (M) 270.5415° 136.7342°
    Apogee 471.776 km 471.675 km
    Perigee 469.686 km 467.753 km
    Orbit Epoch 2026-10-19T02:12:33+0000 2026-10-19T04:57:04+0000

    STARLINK-4539 & FLOCK 4G 2 Collision Probability (Pc) Trend

    STARLINK-4539 & FLOCK 4G 2 Collision Probability (Pc) TrendNot Available

    STARLINK-4539 & FLOCK 4G 2 Miss Distance (Miss Distance) Trend

    STARLINK-4539 & FLOCK 4G 2 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4539Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    FLOCK 4G 2Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4539Collision Probability Trend

    Object 1 Probability TrendNot Available

    FLOCK 4G 2Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4539

    No nearby objects data