Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.171539E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T14:50:22+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 61858
    NORAD ID 61858
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-32556
    Time of Closest Approach 2026-10-21T18:02:03+0000
    Collision Probability (Pc) 2.171539E-6
    Conjunction Distance (km) 2.029 km
    Relative Speed (km/s) 10.093 km/s
    Conjunction Risk Parameters R (Radial): 1.165 | I (In-track): -1.242 | C (Cross-track): -1.101
    Collision Risk Index (CRI) 0.42
    X Position (km) 4769.593 4769.975
    Position Y (km) -2154.662 -2153.869
    Position Z (km) -4441.446 -4439.619
    Velocity X (km/s) 3.915 4.276
    Velocity Y (km/s) -3.13 6.088
    Velocity Z (km/s) 5.736 1.642

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-32556
    Semimajor Axis (a) 6860.805 km 6861.203 km
    Eccentricity (e) 0.000833 0.000203
    Inclination (i) 97.1356° 43.0026°
    RAAN 327.8378° 54.4593°
    Perigee Argument 23.0763° 283.0920°
    Mean Anomaly (M) 337.0850° 76.9705°
    Apogee 488.381 km 484.459 km
    Perigee 476.955 km 481.673 km
    Orbit Epoch 2026-10-19T22:11:46+0000 2026-10-19T09:51:09+0000

    YAOGAN 21 & STARLINK-32556 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-32556 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-32556 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-32556 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-32556Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-32556Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data