Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.556684E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-15T23:17:36+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 66615
    NORAD ID 66615
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-35988
    Time of Closest Approach 2026-09-17T18:51:39+0000
    Collision Probability (Pc) 1.556684E-6
    Conjunction Distance (km) 2.537 km
    Relative Speed (km/s) 12.618 km/s
    Conjunction Risk Parameters R (Radial): 2.31 | I (In-track): -0.581 | C (Cross-track): -0.872
    Collision Risk Index (CRI) 0.39
    X Position (km) -2826.252 -2826.305
    Position Y (km) 4276 4277.465
    Position Z (km) 4548.158 4550.228
    Velocity X (km/s) -1.701 -5.644
    Velocity Y (km/s) 4.873 -4.993
    Velocity Z (km/s) -5.62 1.185

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-35988
    Semimajor Axis (a) 6861.812 km 6861.157 km
    Eccentricity (e) 0.000928 0.000096
    Inclination (i) 97.1397° 43.0005°
    RAAN 294.7326° 68.2756°
    Perigee Argument 124.8067° 267.9010°
    Mean Anomaly (M) 235.4047° 92.1732°
    Apogee 490.042 km 483.678 km
    Perigee 477.308 km 482.362 km
    Orbit Epoch 2026-09-15T08:05:00+0000 2026-09-14T18:20:33+0000

    YAOGAN 21 & STARLINK-35988 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-35988 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-35988 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-35988 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-35988Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-35988Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data