Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    4.727081E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T06:16:23+0800
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    1 Object 1

    AOE ID 56334
    NORAD ID 56334
    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-5548 HERMES 4
    Time of Closest Approach 2026-10-20T22:42:03+0000
    Collision Probability (Pc) 4.727081E-6
    Conjunction Distance (km) 1.596 km
    Relative Speed (km/s) 11.852 km/s
    Conjunction Risk Parameters R (Radial): -0.468 | I (In-track): 0.955 | C (Cross-track): 1.191
    Collision Risk Index (CRI) 0.48
    X Position (km) -1178.906 -1179.771
    Position Y (km) 725.377 724.118
    Position Z (km) 6693.592 6694.054
    Velocity X (km/s) -2.458 7.461
    Velocity Y (km/s) 7.127 1.1
    Velocity Z (km/s) -1.203 1.192

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-5548 HERMES 4
    Semimajor Axis (a) 6843.666 km 6846.057 km
    Eccentricity (e) 0.000138 0.000462
    Inclination (i) 97.2822° 97.3707°
    RAAN 288.7016° 185.4436°
    Perigee Argument 91.6114° 107.5329°
    Mean Anomaly (M) 268.5288° 252.6419°
    Apogee 466.477 km 471.086 km
    Perigee 464.581 km 464.754 km
    Orbit Epoch 2026-10-19T10:15:02+0000 2026-10-19T04:02:34+0000

    STARLINK-5548 & HERMES 4 Collision Probability (Pc) Trend

    STARLINK-5548 & HERMES 4 Collision Probability (Pc) TrendNot Available

    STARLINK-5548 & HERMES 4 Miss Distance (Miss Distance) Trend

    STARLINK-5548 & HERMES 4 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-5548Miss 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-5548Collision Probability Trend

    Object 1 Probability TrendNot Available

    HERMES 4Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-5548

    No nearby objects data