Conjunction Event Detail

    ⚠
    High Risk
    High collision probability. Maneuver recommended for primary asset.
    3.68963E-4
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T06:16:23+0800
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    1 Object 1

    AOE ID 63833
    NORAD ID 63833
    Object Type PAYLOAD
    Country
    IT IT
    ← VS →

    2 Object 2

    AOE ID 64299
    NORAD ID 64299
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter HERMES 4 STARLINK-34378
    Time of Closest Approach 2026-10-21T07:28:45+0000
    Collision Probability (Pc) 3.68963E-4
    Conjunction Distance (km) 0.37 km
    Relative Speed (km/s) 14.71 km/s
    Conjunction Risk Parameters R (Radial): 0.312 | I (In-track): 0.038 | C (Cross-track): -0.195
    Collision Risk Index (CRI) 0.86
    X Position (km) -3055.553 -3055.7
    Position Y (km) -1192.748 -1192.996
    Position Z (km) -6020.616 -6020.848
    Velocity X (km/s) -6.742 6.336
    Velocity Y (km/s) -0.439 -3.375
    Velocity Z (km/s) 3.511 -2.547

    Orbital Parameters 国际轨道数据源

    Parameter HERMES 4 STARLINK-34378
    Semimajor Axis (a) 6846.057 km 6852.658 km
    Eccentricity (e) 0.000462 0.000383
    Inclination (i) 97.3707° 69.9988°
    RAAN 185.4436° 345.2020°
    Perigee Argument 107.5329° 275.5458°
    Mean Anomaly (M) 252.6419° 84.5281°
    Apogee 471.086 km 477.145 km
    Perigee 464.754 km 471.897 km
    Orbit Epoch 2026-10-19T04:02:34+0000 2026-10-19T02:37:50+0000

    HERMES 4 & STARLINK-34378 Collision Probability (Pc) Trend

    HERMES 4 & STARLINK-34378 Collision Probability (Pc) TrendNot Available

    HERMES 4 & STARLINK-34378 Miss Distance (Miss Distance) Trend

    HERMES 4 & STARLINK-34378 Miss Distance (Miss Distance) TrendNot Available

    HERMES 4Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-34378Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HERMES 4Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-34378Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HERMES 4

    No nearby objects data