Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.580753E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T05:17:16+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 59484
    NORAD ID 59484
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-31753
    Time of Closest Approach 2026-10-21T10:19:54+0000
    Collision Probability (Pc) 1.580753E-6
    Conjunction Distance (km) 2.629 km
    Relative Speed (km/s) 14.332 km/s
    Conjunction Risk Parameters R (Radial): -2.615 | I (In-track): -0.074 | C (Cross-track): -0.252
    Collision Risk Index (CRI) 0.39
    X Position (km) 5912.442 5914.82
    Position Y (km) -3434.032 -3435.151
    Position Z (km) -544.762 -544.836
    Velocity X (km/s) 0.034 2.456
    Velocity Y (km/s) -1.118 5.04
    Velocity Z (km/s) 7.545 -5.167

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-31753
    Semimajor Axis (a) 6860.806 km 6861.188 km
    Eccentricity (e) 0.000845 0.000130
    Inclination (i) 97.1353° 43.0013°
    RAAN 327.4622° 158.4407°
    Perigee Argument 24.2991° 269.5967°
    Mean Anomaly (M) 335.8646° 90.4736°
    Apogee 488.466 km 483.943 km
    Perigee 476.872 km 482.159 km
    Orbit Epoch 2026-10-19T12:45:51+0000 2026-10-19T01:01:30+0000

    YAOGAN 21 & STARLINK-31753 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-31753 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-31753 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-31753 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31753Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31753Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data