Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.546943E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T16:12:59+0800
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    1 Object 1

    AOE ID 53419
    NORAD ID 53419
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 63835
    NORAD ID 63835
    Object Type PAYLOAD
    Country
    IT IT

    Conjunction Constraints

    Parameter STARLINK-4476 HERMES-3
    Time of Closest Approach 2026-09-13T04:44:14+0000
    Collision Probability (Pc) 1.546943E-6
    Conjunction Distance (km) 2.692 km
    Relative Speed (km/s) 14.721 km/s
    Conjunction Risk Parameters R (Radial): -1.434 | I (In-track): 0.603 | C (Cross-track): 2.197
    Collision Risk Index (CRI) 0.39
    X Position (km) -5668.664 -5668.316
    Position Y (km) 3319.522 3316.894
    Position Z (km) 1903.114 1903.579
    Velocity X (km/s) -3.849 2.344
    Velocity Y (km/s) -3.269 -0.19
    Velocity Z (km/s) -5.73 7.264

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4476 HERMES-3
    Semimajor Axis (a) 6840.854 km 6834.016 km
    Eccentricity (e) 0.000125 0.000631
    Inclination (i) 53.1620° 97.3724°
    RAAN 349.3305° 150.5730°
    Perigee Argument 80.5493° 156.8250°
    Mean Anomaly (M) 279.5652° 203.3279°
    Apogee 463.576 km 460.190 km
    Perigee 461.858 km 451.568 km
    Orbit Epoch 2026-09-11T16:05:25+0000 2026-09-11T22:58:26+0000

    STARLINK-4476 & HERMES-3 Collision Probability (Pc) Trend

    STARLINK-4476 & HERMES-3 Collision Probability (Pc) TrendNot Available

    STARLINK-4476 & HERMES-3 Miss Distance (Miss Distance) Trend

    STARLINK-4476 & HERMES-3 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4476Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    HERMES-3Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4476Collision Probability Trend

    Object 1 Probability TrendNot Available

    HERMES-3Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4476

    No nearby objects data