Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.210604E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T06:54:19+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 56504
    NORAD ID 56504
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-5716
    Time of Closest Approach 2026-09-18T05:27:18+0000
    Collision Probability (Pc) 1.210604E-6
    Conjunction Distance (km) 2.887 km
    Relative Speed (km/s) 11.41 km/s
    Conjunction Risk Parameters R (Radial): -1.129 | I (In-track): -1.76 | C (Cross-track): 1.989
    Collision Risk Index (CRI) 0.37
    X Position (km) 1783.551 1782.206
    Position Y (km) -4693.642 -4694.778
    Position Z (km) 4668.661 4666.374
    Velocity X (km/s) -3.032 7.027
    Velocity Y (km/s) 4.335 2.953
    Velocity Z (km/s) 5.493 0.287

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-5716
    Semimajor Axis (a) 6861.809 km 6861.196 km
    Eccentricity (e) 0.000932 0.000108
    Inclination (i) 97.1397° 43.0012°
    RAAN 294.9207° 222.1949°
    Perigee Argument 124.2617° 267.6121°
    Mean Anomaly (M) 235.9507° 92.4607°
    Apogee 490.065 km 483.801 km
    Perigee 477.279 km 482.317 km
    Orbit Epoch 2026-09-15T12:48:01+0000 2026-09-15T04:53:26+0000

    YAOGAN 21 & STARLINK-5716 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-5716 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-5716 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-5716 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5716Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5716Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data