Conjunction Event Detail

    ⚠
    High Risk
    High collision probability. Maneuver recommended for primary asset.
    1.802794E-4
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-13T08:36:52+0800
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    1 Object 1

    AOE ID 53849
    NORAD ID 53849
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 63833
    NORAD ID 63833
    Object Type PAYLOAD
    Country
    IT IT

    Conjunction Constraints

    Parameter STARLINK-4770 HERMES 4
    Time of Closest Approach 2026-10-14T05:02:22+0000
    Collision Probability (Pc) 1.802794E-4
    Conjunction Distance (km) 0.528 km
    Relative Speed (km/s) 14.683 km/s
    Conjunction Risk Parameters R (Radial): 0.101 | I (In-track): 0.153 | C (Cross-track): 0.495
    Collision Risk Index (CRI) 0.8
    X Position (km) -6430.11 -6430.155
    Position Y (km) 246.824 246.347
    Position Z (km) 2338.706 2338.927
    Velocity X (km/s) -2.202 2.633
    Velocity Y (km/s) -4.787 0.941
    Velocity Z (km/s) -5.523 7.101

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4770 HERMES 4
    Semimajor Axis (a) 6848.875 km 6846.479 km
    Eccentricity (e) 0.000138 0.000422
    Inclination (i) 53.1621° 97.3719°
    RAAN 22.5544° 178.5487°
    Perigee Argument 69.6840° 121.6322°
    Mean Anomaly (M) 290.4309° 238.5332°
    Apogee 471.680 km 471.230 km
    Perigee 469.796 km 465.454 km
    Orbit Epoch 2026-10-12T06:57:12+0000 2026-10-12T05:56:25+0000

    STARLINK-4770 & HERMES 4 Collision Probability (Pc) Trend

    STARLINK-4770 & HERMES 4 Collision Probability (Pc) TrendNot Available

    STARLINK-4770 & HERMES 4 Miss Distance (Miss Distance) Trend

    STARLINK-4770 & HERMES 4 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4770Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    HERMES 4Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4770Collision Probability Trend

    Object 1 Probability TrendNot Available

    HERMES 4Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4770

    No nearby objects data