Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    9.657668E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T02:44:36+0800
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    1 Object 1

    AOE ID 46051
    NORAD ID 46051
    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-1540 HERMES 4
    Time of Closest Approach 2026-10-19T05:44:50+0000
    Collision Probability (Pc) 9.657668E-5
    Conjunction Distance (km) 0.561 km
    Relative Speed (km/s) 6.842 km/s
    Conjunction Risk Parameters R (Radial): 0.529 | I (In-track): 0.163 | C (Cross-track): 0.09
    Collision Risk Index (CRI) 0.75
    X Position (km) -5841.973 -5842.331
    Position Y (km) -100.661 -100.718
    Position Z (km) 3561.999 3562.427
    Velocity X (km/s) 2.929 3.92
    Velocity Y (km/s) -5.312 1.214
    Velocity Z (km/s) 4.638 6.437

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-1540 HERMES 4
    Semimajor Axis (a) 6848.559 km 6846.114 km
    Eccentricity (e) 0.000260 0.000457
    Inclination (i) 53.1608° 97.3707°
    RAAN 159.9031° 184.4030°
    Perigee Argument 63.5422° 109.9305°
    Mean Anomaly (M) 296.5846° 250.2430°
    Apogee 472.204 km 471.107 km
    Perigee 468.640 km 464.847 km
    Orbit Epoch 2026-10-17T22:15:12+0000 2026-10-18T02:58:18+0000

    STARLINK-1540 & HERMES 4 Collision Probability (Pc) Trend

    STARLINK-1540 & HERMES 4 Collision Probability (Pc) TrendNot Available

    STARLINK-1540 & HERMES 4 Miss Distance (Miss Distance) Trend

    STARLINK-1540 & HERMES 4 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-1540Miss 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-1540Collision Probability Trend

    Object 1 Probability TrendNot Available

    HERMES 4Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-1540

    No nearby objects data