Conjunction Event Detail

    ⚠
    High Risk
    High collision probability. Maneuver recommended for primary asset.
    4.726788E-4
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-16T14:37:57+0800
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    1 Object 1

    AOE ID 51750
    NORAD ID 51750
    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-3505 HERMES 4
    Time of Closest Approach 2026-10-16T08:46:57+0000
    Collision Probability (Pc) 4.726788E-4
    Conjunction Distance (km) 0.315 km
    Relative Speed (km/s) 14.598 km/s
    Conjunction Risk Parameters R (Radial): -0.282 | I (In-track): -0.046 | C (Cross-track): -0.13
    Collision Risk Index (CRI) 0.88
    X Position (km) -6090.309 -6090.079
    Position Y (km) 122.495 122.618
    Position Z (km) 3122.677 3122.501
    Velocity X (km/s) -2.684 3.479
    Velocity Y (km/s) -5.09 1.03
    Velocity Z (km/s) -5.017 6.715

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3505 HERMES 4
    Semimajor Axis (a) 6848.840 km 6846.251 km
    Eccentricity (e) 0.000128 0.000443
    Inclination (i) 53.1591° 97.3710°
    RAAN 25.2191° 182.2564°
    Perigee Argument 77.1392° 114.2558°
    Mean Anomaly (M) 282.9752° 245.9147°
    Apogee 471.577 km 471.148 km
    Perigee 469.829 km 465.080 km
    Orbit Epoch 2026-10-15T13:21:35+0000 2026-10-15T23:15:41+0000

    STARLINK-3505 & HERMES 4 Collision Probability (Pc) Trend

    STARLINK-3505 & HERMES 4 Collision Probability (Pc) TrendNot Available

    STARLINK-3505 & HERMES 4 Miss Distance (Miss Distance) Trend

    STARLINK-3505 & HERMES 4 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3505Miss 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-3505Collision Probability Trend

    Object 1 Probability TrendNot Available

    HERMES 4Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3505

    No nearby objects data