Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    5.829816E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T23:34:54+0800
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    1 Object 1

    AOE ID 53205
    NORAD ID 53205
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 63242
    NORAD ID 63242
    Object Type PAYLOAD
    Country
    IT IT

    Conjunction Constraints

    Parameter STARLINK-4397 HERMES-1
    Time of Closest Approach 2026-09-06T07:58:40+0000
    Collision Probability (Pc) 5.829816E-6
    Conjunction Distance (km) 1.57 km
    Relative Speed (km/s) 14.973 km/s
    Conjunction Risk Parameters R (Radial): 1.498 | I (In-track): -0.074 | C (Cross-track): 0.464
    Collision Risk Index (CRI) 0.5
    X Position (km) 3349.315 3348.244
    Position Y (km) -3674.264 -3673.785
    Position Z (km) -4759.377 -4758.335
    Velocity X (km/s) 2.499 -4.486
    Velocity Y (km/s) -4.723 2.915
    Velocity Z (km/s) 5.41 -5.408

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4397 HERMES-1
    Semimajor Axis (a) 6875.057 km 6877.320 km
    Eccentricity (e) 0.000181 0.000528
    Inclination (i) 97.2858° 97.3773°
    RAAN 303.3768° 137.3019°
    Perigee Argument 77.9088° 267.5997°
    Mean Anomaly (M) 85.2217° 92.4635°
    Apogee 498.166 km 502.815 km
    Perigee 495.674 km 495.551 km
    Orbit Epoch 2026-09-04T08:00:02+0000 2026-09-04T02:55:59+0000

    STARLINK-4397 & HERMES-1 Collision Probability (Pc) Trend

    STARLINK-4397 & HERMES-1 Collision Probability (Pc) TrendNot Available

    STARLINK-4397 & HERMES-1 Miss Distance (Miss Distance) Trend

    STARLINK-4397 & HERMES-1 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4397Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    HERMES-1Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4397Collision Probability Trend

    Object 1 Probability TrendNot Available

    HERMES-1Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4397

    No nearby objects data