Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.359121E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T15:37:18+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 63222
    NORAD ID 63222
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 AEROCUBE 18B
    Time of Closest Approach 2026-09-06T05:13:18+0000
    Collision Probability (Pc) 1.359121E-6
    Conjunction Distance (km) 2.923 km
    Relative Speed (km/s) 14.364 km/s
    Conjunction Risk Parameters R (Radial): 1.105 | I (In-track): -0.883 | C (Cross-track): -2.557
    Collision Risk Index (CRI) 0.38
    X Position (km) 1461.098 1463.585
    Position Y (km) -2209.796 -2208.651
    Position Z (km) -6342.685 -6343.708
    Velocity X (km/s) 1.616 -5.769
    Velocity Y (km/s) -6.894 4.112
    Velocity Z (km/s) 2.77 -2.766

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 AEROCUBE 18B
    Semimajor Axis (a) 6862.094 km 6868.488 km
    Eccentricity (e) 0.000838 0.000386
    Inclination (i) 97.1424° 97.3848°
    RAAN 284.7584° 140.3475°
    Perigee Argument 157.2178° 183.8095°
    Mean Anomaly (M) 202.9436° 176.3114°
    Apogee 489.709 km 493.005 km
    Perigee 478.205 km 487.697 km
    Orbit Epoch 2026-09-04T22:04:22+0000 2026-09-04T22:13:04+0000

    YAOGAN 21 & AEROCUBE 18B Collision Probability (Pc) Trend

    YAOGAN 21 & AEROCUBE 18B Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & AEROCUBE 18B Miss Distance (Miss Distance) Trend

    YAOGAN 21 & AEROCUBE 18B Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    AEROCUBE 18BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    AEROCUBE 18BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data