Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    5.305669E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T09:09:26+0800
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    1 Object 1

    AOE ID 40143
    NORAD ID 40143
    Object Type PAYLOAD
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 57908
    NORAD ID 57908
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-30464
    Time of Closest Approach 2026-09-03T18:22:01+0000
    Collision Probability (Pc) 5.305669E-6
    Conjunction Distance (km) 1.552 km
    Relative Speed (km/s) 12.336 km/s
    Conjunction Risk Parameters R (Radial): 1.552 | I (In-track): 0.026 | C (Cross-track): 0.042
    Collision Risk Index (CRI) 0.49
    X Position (km) -1750.388 -1750.825
    Position Y (km) 4753.885 4754.969
    Position Z (km) 4616.129 4617.15
    Velocity X (km/s) -0.548 -6.83
    Velocity Y (km/s) 5.202 -3.299
    Velocity Z (km/s) -5.554 0.806

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-30464
    Semimajor Axis (a) 6862.133 km 6861.232 km
    Eccentricity (e) 0.000812 0.000100
    Inclination (i) 97.1417° 43.0018°
    RAAN 282.5004° 43.8515°
    Perigee Argument 165.0324° 256.2714°
    Mean Anomaly (M) 195.1157° 103.8027°
    Apogee 489.565 km 483.782 km
    Perigee 478.427 km 482.408 km
    Orbit Epoch 2026-09-02T13:27:52+0000 2026-09-01T17:21:59+0000

    YAOGAN 21 & STARLINK-30464 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-30464 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-30464 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-30464 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-30464Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-30464Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data