Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.256112E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T06:09:36+0800
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    1 Object 1

    AOE ID 31780
    NORAD ID 31780
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 37223
    NORAD ID 37223
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FENGYUN 1C DEB RAX (USA 218)
    Time of Closest Approach 2026-09-11T04:31:14+0000
    Collision Probability (Pc) 1.256112E-6
    Conjunction Distance (km) 2.951 km
    Relative Speed (km/s) 12.778 km/s
    Conjunction Risk Parameters R (Radial): 1.742 | I (In-track): -1.295 | C (Cross-track): -1.999
    Collision Risk Index (CRI) 0.37
    X Position (km) -1074.984 -1076.635
    Position Y (km) 1877.698 1878.468
    Position Z (km) -6597.121 -6594.799
    Velocity X (km/s) 0.36 -6.95
    Velocity Y (km/s) 7.332 -2.996
    Velocity Z (km/s) 2.051 0.274

    Orbital Parameters 国际轨道数据源

    Parameter FENGYUN 1C DEB RAX (USA 218)
    Semimajor Axis (a) 7036.710 km 6942.550 km
    Eccentricity (e) 0.014630 0.001512
    Inclination (i) 99.3023° 71.9690°
    RAAN 86.1754° 203.9849°
    Perigee Argument 306.5885° 234.9595°
    Mean Anomaly (M) 52.1930° 125.0162°
    Apogee 761.518 km 574.909 km
    Perigee 555.628 km 553.917 km
    Orbit Epoch 2026-09-08T00:06:45+0000 2026-09-10T14:30:49+0000

    FENGYUN 1C DEB & RAX (USA 218) Collision Probability (Pc) Trend

    FENGYUN 1C DEB & RAX (USA 218) Collision Probability (Pc) TrendNot Available

    FENGYUN 1C DEB & RAX (USA 218) Miss Distance (Miss Distance) Trend

    FENGYUN 1C DEB & RAX (USA 218) Miss Distance (Miss Distance) TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    RAX (USA 218)Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    RAX (USA 218)Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FENGYUN 1C DEB

    No nearby objects data