Conjunction Event Detail

    ⚠
    High Risk
    High collision probability. Maneuver recommended for primary asset.
    1.964122E-4
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T06:16:24+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 69559
    NORAD ID 69559
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter HERMES 4 STARLINK-37958
    Time of Closest Approach 2026-10-21T12:46:11+0000
    Collision Probability (Pc) 1.964122E-4
    Conjunction Distance (km) 0.502 km
    Relative Speed (km/s) 13.941 km/s
    Conjunction Risk Parameters R (Radial): -0.371 | I (In-track): 0.14 | C (Cross-track): 0.307
    Collision Risk Index (CRI) 0.81
    X Position (km) -2061.825 -2061.623
    Position Y (km) 566.024 566.318
    Position Z (km) 6493.207 6492.855
    Velocity X (km/s) 7.209 -5.573
    Velocity Y (km/s) 1.271 4.742
    Velocity Z (km/s) 2.172 -2.178

    Orbital Parameters 国际轨道数据源

    Parameter HERMES 4 STARLINK-37958
    Semimajor Axis (a) 6846.057 km 6843.665 km
    Eccentricity (e) 0.000462 0.000122
    Inclination (i) 97.3707° 97.2827°
    RAAN 185.4436° 319.6454°
    Perigee Argument 107.5329° 96.2069°
    Mean Anomaly (M) 252.6419° 263.9313°
    Apogee 471.086 km 466.366 km
    Perigee 464.754 km 464.690 km
    Orbit Epoch 2026-10-19T04:02:34+0000 2026-10-19T08:37:32+0000

    HERMES 4 & STARLINK-37958 Collision Probability (Pc) Trend

    HERMES 4 & STARLINK-37958 Collision Probability (Pc) TrendNot Available

    HERMES 4 & STARLINK-37958 Miss Distance (Miss Distance) Trend

    HERMES 4 & STARLINK-37958 Miss Distance (Miss Distance) TrendNot Available

    HERMES 4Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-37958Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HERMES 4Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-37958Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HERMES 4

    No nearby objects data