Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.58653E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T20:04:02+0800
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    1 Object 1

    Name ALICE
    AOE ID 39467
    NORAD ID 39467
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 53985
    NORAD ID 53985
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter ALICE STARLINK-5147
    Time of Closest Approach 2026-09-12T18:44:05+0000
    Collision Probability (Pc) 1.58653E-6
    Conjunction Distance (km) 2.678 km
    Relative Speed (km/s) 15.159 km/s
    Conjunction Risk Parameters R (Radial): -1.195 | I (In-track): 0.13 | C (Cross-track): 2.393
    Collision Risk Index (CRI) 0.39
    X Position (km) -386.846 -388.772
    Position Y (km) 6908.653 6907.329
    Position Z (km) -100.241 -101.548
    Velocity X (km/s) 3.837 -4.549
    Velocity Y (km/s) 0.256 -0.174
    Velocity Z (km/s) -6.543 6.077

    Orbital Parameters 国际轨道数据源

    Parameter ALICE STARLINK-5147
    Semimajor Axis (a) 6913.701 km 6917.907 km
    Eccentricity (e) 0.016992 0.000162
    Inclination (i) 120.4629° 53.1589°
    RAAN 271.0471° 97.4252°
    Perigee Argument 86.7600° 91.9327°
    Mean Anomaly (M) 275.2894° 268.1850°
    Apogee 653.044 km 540.895 km
    Perigee 418.084 km 538.645 km
    Orbit Epoch 2026-09-12T02:03:57+0000 2026-09-11T23:39:45+0000

    ALICE & STARLINK-5147 Collision Probability (Pc) Trend

    ALICE & STARLINK-5147 Collision Probability (Pc) TrendNot Available

    ALICE & STARLINK-5147 Miss Distance (Miss Distance) Trend

    ALICE & STARLINK-5147 Miss Distance (Miss Distance) TrendNot Available

    ALICEMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5147Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ALICECollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5147Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ALICE

    No nearby objects data