Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.738343E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-13T05:55:17+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 59632
    NORAD ID 59632
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-31781
    Time of Closest Approach 2026-10-13T10:30:47+0000
    Collision Probability (Pc) 2.738343E-6
    Conjunction Distance (km) 1.712 km
    Relative Speed (km/s) 7.11 km/s
    Conjunction Risk Parameters R (Radial): 0.299 | I (In-track): 1.491 | C (Cross-track): -0.787
    Collision Risk Index (CRI) 0.44
    X Position (km) 5374.431 5375.277
    Position Y (km) -4032.151 -4032.045
    Position Z (km) -1393.727 -1392.242
    Velocity X (km/s) 0.639 4.236
    Velocity Y (km/s) -1.688 3.938
    Velocity Z (km/s) 7.408 4.967

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-31781
    Semimajor Axis (a) 6861.057 km 6861.267 km
    Eccentricity (e) 0.000912 0.000119
    Inclination (i) 97.1358° 43.0043°
    RAAN 320.5055° 342.9718°
    Perigee Argument 47.1520° 265.1209°
    Mean Anomaly (M) 313.0485° 94.9506°
    Apogee 489.178 km 483.949 km
    Perigee 476.662 km 482.311 km
    Orbit Epoch 2026-10-12T06:16:03+0000 2026-10-12T04:46:19+0000

    YAOGAN 21 & STARLINK-31781 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-31781 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-31781 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-31781 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31781Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31781Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data