Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    2.212256E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T09:09:28+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 66959
    NORAD ID 66959
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-35887
    Time of Closest Approach 2026-09-04T18:05:00+0000
    Collision Probability (Pc) 2.212256E-5
    Conjunction Distance (km) 1.053 km
    Relative Speed (km/s) 14.279 km/s
    Conjunction Risk Parameters R (Radial): 0.82 | I (In-track): -0.233 | C (Cross-track): -0.618
    Collision Risk Index (CRI) 0.62
    X Position (km) -1869.493 -1869.137
    Position Y (km) 6420.07 6420.935
    Position Z (km) 1522.496 1522.98
    Velocity X (km/s) 0.461 -5.177
    Velocity Y (km/s) 1.895 -2.679
    Velocity Z (km/s) -7.376 4.919

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-35887
    Semimajor Axis (a) 6862.133 km 6861.165 km
    Eccentricity (e) 0.000812 0.000210
    Inclination (i) 97.1417° 43.0016°
    RAAN 282.5004° 107.9907°
    Perigee Argument 165.0324° 279.5508°
    Mean Anomaly (M) 195.1157° 80.5107°
    Apogee 489.565 km 484.468 km
    Perigee 478.427 km 481.588 km
    Orbit Epoch 2026-09-02T13:27:52+0000 2026-09-01T22:31:27+0000

    YAOGAN 21 & STARLINK-35887 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-35887 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-35887 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-35887 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-35887Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-35887Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data