Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.050027E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T03:02:28+0800
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    1 Object 1

    AOE ID 53857
    NORAD ID 53857
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 55946
    NORAD ID 55946
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4809 STARLINK-5857
    Time of Closest Approach 2026-10-20T03:40:22+0000
    Collision Probability (Pc) 2.050027E-6
    Conjunction Distance (km) 2.054 km
    Relative Speed (km/s) 9.654 km/s
    Conjunction Risk Parameters R (Radial): -1.943 | I (In-track): 0.52 | C (Cross-track): 0.413
    Collision Risk Index (CRI) 0.41
    X Position (km) -931.629 -931.948
    Position Y (km) 4286.104 4284.6
    Position Z (km) 5250.366 5249.005
    Velocity X (km/s) -7.42 -2.926
    Velocity Y (km/s) 0.506 -5.711
    Velocity Z (km/s) -1.726 4.134

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4809 STARLINK-5857
    Semimajor Axis (a) 6848.892 km 6852.861 km
    Eccentricity (e) 0.000110 0.000333
    Inclination (i) 53.1586° 70.0007°
    RAAN 355.2964° 80.8100°
    Perigee Argument 90.7093° 264.5154°
    Mean Anomaly (M) 269.4034° 35.7517°
    Apogee 471.507 km 477.009 km
    Perigee 470.003 km 472.439 km
    Orbit Epoch 2026-10-18T04:13:49+0000 2026-10-18T12:00:03+0000

    STARLINK-4809 & STARLINK-5857 Collision Probability (Pc) Trend

    STARLINK-4809 & STARLINK-5857 Collision Probability (Pc) TrendNot Available

    STARLINK-4809 & STARLINK-5857 Miss Distance (Miss Distance) Trend

    STARLINK-4809 & STARLINK-5857 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4809Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5857Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4809Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5857Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4809

    No nearby objects data