Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    4.272765E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-18T19:32:38+0800
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    1 Object 1

    AOE ID 48355
    NORAD ID 48355
    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-2635 HERMES 4
    Time of Closest Approach 2026-10-19T18:18:31+0000
    Collision Probability (Pc) 4.272765E-5
    Conjunction Distance (km) 0.869 km
    Relative Speed (km/s) 14.365 km/s
    Conjunction Risk Parameters R (Radial): 0.746 | I (In-track): -0.162 | C (Cross-track): -0.415
    Collision Risk Index (CRI) 0.68
    X Position (km) -5439.981 -5440.701
    Position Y (km) -35.595 -35.204
    Position Z (km) 4148.484 4148.771
    Velocity X (km/s) -3.009 4.571
    Velocity Y (km/s) -5.779 1.261
    Velocity Z (km/s) -3.983 5.983

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-2635 HERMES 4
    Semimajor Axis (a) 6848.393 km 6846.114 km
    Eccentricity (e) 0.000293 0.000457
    Inclination (i) 53.1550° 97.3707°
    RAAN 44.7847° 184.4030°
    Perigee Argument 107.5144° 109.9305°
    Mean Anomaly (M) 252.6178° 250.2430°
    Apogee 472.263 km 471.107 km
    Perigee 468.249 km 464.847 km
    Orbit Epoch 2026-10-17T17:12:06+0000 2026-10-18T02:58:18+0000

    STARLINK-2635 & HERMES 4 Collision Probability (Pc) Trend

    STARLINK-2635 & HERMES 4 Collision Probability (Pc) TrendNot Available

    STARLINK-2635 & HERMES 4 Miss Distance (Miss Distance) Trend

    STARLINK-2635 & HERMES 4 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-2635Miss 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-2635Collision Probability Trend

    Object 1 Probability TrendNot Available

    HERMES 4Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-2635

    No nearby objects data