Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.648985E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T16:15:29+0800
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    1 Object 1

    AOE ID 51467
    NORAD ID 51467
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 53488
    NORAD ID 53488
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3178 STARLINK-4421
    Time of Closest Approach 2026-09-05T00:21:17+0000
    Collision Probability (Pc) 1.648985E-6
    Conjunction Distance (km) 2.59 km
    Relative Speed (km/s) 14.758 km/s
    Conjunction Risk Parameters R (Radial): -2.543 | I (In-track): 0.136 | C (Cross-track): 0.465
    Collision Risk Index (CRI) 0.39
    X Position (km) -6799.225 -6801.806
    Position Y (km) -650.721 -650.522
    Position Z (km) -446.995 -446.968
    Velocity X (km/s) 0.047 0.391
    Velocity Y (km/s) -4.601 1.011
    Velocity Z (km/s) 6.091 -7.554

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3178 STARLINK-4421
    Semimajor Axis (a) 6843.383 km 6843.697 km
    Eccentricity (e) 0.000125 0.000115
    Inclination (i) 53.1607° 97.2849°
    RAAN 193.4490° 4.2375°
    Perigee Argument 91.6780° 87.3416°
    Mean Anomaly (M) 268.4366° 272.7958°
    Apogee 466.103 km 466.348 km
    Perigee 464.389 km 464.772 km
    Orbit Epoch 2026-09-03T21:47:07+0000 2026-09-03T06:50:15+0000

    STARLINK-3178 & STARLINK-4421 Collision Probability (Pc) Trend

    STARLINK-3178 & STARLINK-4421 Collision Probability (Pc) TrendNot Available

    STARLINK-3178 & STARLINK-4421 Miss Distance (Miss Distance) Trend

    STARLINK-3178 & STARLINK-4421 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3178Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4421Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3178Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4421Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3178

    No nearby objects data