Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    5.520044E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-14T11:59:08+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) 5.520044E-7
    Conjunction Distance (km) 2.932 km
    Relative Speed (km/s) 2.724 km/s
    Conjunction Risk Parameters R (Radial): -2.188 | I (In-track): 1.92 | C (Cross-track): -0.345
    Collision Risk Index (CRI) 0.3
    X Position (km) -1117.691 -1117.496
    Position Y (km) -25.131 -23.178
    Position Z (km) 7114.82 7112.642
    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) 0.001267 0.003488
    Inclination (i) 98.6869° 98.8425°
    RAAN 283.1753° 261.6906°
    Perigee Argument 22.1233° 74.5606°
    Mean Anomaly (M) 338.0486° 285.9413°
    Apogee 843.070 km 878.350 km
    Perigee 824.794 km 827.910 km
    Orbit Epoch 2026-09-13T20:45:06+0000 2026-09-13T17:13:24+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