Conjunction Event Detail

    High Risk
    High collision probability. Maneuver recommended for primary asset.
    2.670367E-4
    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 63404
    NORAD ID 63404
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-33711
    Time of Closest Approach 2026-09-18T05:58:12+0000
    Collision Probability (Pc) 2.670367E-4
    Conjunction Distance (km) 0.437 km
    Relative Speed (km/s) 14.203 km/s
    Conjunction Risk Parameters R (Radial): 0.423 | I (In-track): 0.05 | C (Cross-track): 0.095
    Collision Risk Index (CRI) 0.84
    X Position (km) -3245.499 -3245.785
    Position Y (km) 5646.651 5646.972
    Position Z (km) 2147.514 2147.588
    Velocity X (km/s) -0.322 -4.33
    Velocity Y (km/s) 2.563 -4.253
    Velocity Z (km/s) -7.178 4.621

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-33711
    Semimajor Axis (a) 6861.809 km 6861.177 km
    Eccentricity (e) 0.000932 0.000128
    Inclination (i) 97.1397° 42.9984°
    RAAN 294.9207° 117.2977°
    Perigee Argument 124.2617° 269.7952°
    Mean Anomaly (M) 235.9507° 90.2753°
    Apogee 490.065 km 483.916 km
    Perigee 477.279 km 482.164 km
    Orbit Epoch 2026-09-15T12:48:01+0000 2026-09-15T00:57:29+0000

    YAOGAN 21 & STARLINK-33711 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-33711 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-33711 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-33711 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-33711Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-33711Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data