Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    5.533934E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-14T06:00:47+0800
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    1 Object 1

    AOE ID 21798
    NORAD ID 21798
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 54552
    NORAD ID 54552
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter DMSP 5D-2 F11 (USA 73) CZ-6A DEB
    Time of Closest Approach 2026-09-15T08:45:35+0000
    Collision Probability (Pc) 5.533934E-7
    Conjunction Distance (km) 2.925 km
    Relative Speed (km/s) 2.724 km/s
    Conjunction Risk Parameters R (Radial): -2.19 | I (In-track): 1.907 | C (Cross-track): -0.345
    Collision Risk Index (CRI) 0.3
    X Position (km) -1117.698 -1117.499
    Position Y (km) -25.15 -23.21
    Position Z (km) 7114.818 7112.639
    Velocity X (km/s) -1.842 0.842
    Velocity Y (km/s) 7.202 7.401
    Velocity Z (km/s) -0.254 0.165

    Orbital Parameters 国际轨道数据源

    Parameter DMSP 5D-2 F11 (USA 73) CZ-6A DEB
    Semimajor Axis (a) 7212.069 km 7231.267 km
    Eccentricity (e) 0.001268 0.003489
    Inclination (i) 98.6870° 98.8425°
    RAAN 282.8992° 261.2714°
    Perigee Argument 22.9199° 75.7266°
    Mean Anomaly (M) 337.2540° 284.7776°
    Apogee 843.080 km 878.357 km
    Perigee 824.784 km 827.903 km
    Orbit Epoch 2026-09-13T13:58:31+0000 2026-09-13T07:01:05+0000

    DMSP 5D-2 F11 (USA 73) & CZ-6A DEB Collision Probability (Pc) Trend

    DMSP 5D-2 F11 (USA 73) & CZ-6A DEB Collision Probability (Pc) TrendNot Available

    DMSP 5D-2 F11 (USA 73) & CZ-6A DEB Miss Distance (Miss Distance) Trend

    DMSP 5D-2 F11 (USA 73) & CZ-6A DEB Miss Distance (Miss Distance) TrendNot Available

    DMSP 5D-2 F11 (USA 73)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    CZ-6A DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    DMSP 5D-2 F11 (USA 73)Collision Probability Trend

    Object 1 Probability TrendNot Available

    CZ-6A DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with DMSP 5D-2 F11 (USA 73)

    No nearby objects data