Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    8.341833E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T23:48:59+0800
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    1 Object 1

    AOE ID 51139
    NORAD ID 51139
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 57853
    NORAD ID 57853
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3172 STARLINK-30404
    Time of Closest Approach 2026-09-11T20:56:04+0000
    Collision Probability (Pc) 8.341833E-7
    Conjunction Distance (km) 2.372 km
    Relative Speed (km/s) 3.426 km/s
    Conjunction Risk Parameters R (Radial): -2.257 | I (In-track): -0.707 | C (Cross-track): 0.163
    Collision Risk Index (CRI) 0.33
    X Position (km) -1846.717 -1846.759
    Position Y (km) -3780.428 -3778.862
    Position Z (km) 5387.2 5385.421
    Velocity X (km/s) 7.281 6.095
    Velocity Y (km/s) -2.053 -4.482
    Velocity Z (km/s) 1.052 -1.052

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3172 STARLINK-30404
    Semimajor Axis (a) 6843.372 km 6840.878 km
    Eccentricity (e) 0.000134 0.000095
    Inclination (i) 53.1589° 53.1590°
    RAAN 173.3392° 141.1259°
    Perigee Argument 92.8242° 87.5735°
    Mean Anomaly (M) 267.2913° 272.5376°
    Apogee 466.154 km 463.394 km
    Perigee 464.316 km 462.088 km
    Orbit Epoch 2026-09-11T04:56:46+0000 2026-09-11T03:18:20+0000

    STARLINK-3172 & STARLINK-30404 Collision Probability (Pc) Trend

    STARLINK-3172 & STARLINK-30404 Collision Probability (Pc) TrendNot Available

    STARLINK-3172 & STARLINK-30404 Miss Distance (Miss Distance) Trend

    STARLINK-3172 & STARLINK-30404 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3172Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-30404Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3172Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-30404Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3172

    No nearby objects data