Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    2.95975E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T15:30:17+0800
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    1 Object 1

    AOE ID 48454
    NORAD ID 48454
    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-2654 HERMES 4
    Time of Closest Approach 2026-09-05T01:32:13+0000
    Collision Probability (Pc) 2.95975E-5
    Conjunction Distance (km) 0.905 km
    Relative Speed (km/s) 10.303 km/s
    Conjunction Risk Parameters R (Radial): 0.869 | I (In-track): 0.181 | C (Cross-track): -0.173
    Collision Risk Index (CRI) 0.64
    X Position (km) 2886.261 2886.603
    Position Y (km) -3178.651 -3178.846
    Position Z (km) -5342.975 -5343.789
    Velocity X (km/s) 4.252 -5.063
    Velocity Y (km/s) 6.172 3.253
    Velocity Z (km/s) -1.376 -4.671

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-2654 HERMES 4
    Semimajor Axis (a) 6848.846 km 6848.295 km
    Eccentricity (e) 0.000107 0.000096
    Inclination (i) 53.1600° 97.3754°
    RAAN 70.5442° 139.9158°
    Perigee Argument 73.4027° 324.3507°
    Mean Anomaly (M) 286.7092° 35.7670°
    Apogee 471.444 km 470.817 km
    Perigee 469.974 km 469.499 km
    Orbit Epoch 2026-09-03T12:24:07+0000 2026-09-03T10:54:13+0000

    STARLINK-2654 & HERMES 4 Collision Probability (Pc) Trend

    STARLINK-2654 & HERMES 4 Collision Probability (Pc) TrendNot Available

    STARLINK-2654 & HERMES 4 Miss Distance (Miss Distance) Trend

    STARLINK-2654 & HERMES 4 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-2654Miss 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-2654Collision Probability Trend

    Object 1 Probability TrendNot Available

    HERMES 4Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-2654

    No nearby objects data