Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.039173E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-14T12:11:04+0800
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    1 Object 1

    AOE ID 28054
    NORAD ID 28054
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 30004
    NORAD ID 30004
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter DMSP 5D-3 F16 (USA 172) FENGYUN 1C DEB
    Time of Closest Approach 2026-09-16T06:22:28+0000
    Collision Probability (Pc) 2.039173E-6
    Conjunction Distance (km) 2.306 km
    Relative Speed (km/s) 14.63 km/s
    Conjunction Risk Parameters R (Radial): 0.446 | I (In-track): 0.388 | C (Cross-track): 2.229
    Collision Risk Index (CRI) 0.41
    X Position (km) 1139.344 1137.185
    Position Y (km) -6558.359 -6559.149
    Position Z (km) 2808.611 2808.788
    Velocity X (km/s) -1.728 -0.788
    Velocity Y (km/s) 2.594 -3.007
    Velocity Z (km/s) 6.742 -6.739

    Orbital Parameters 国际轨道数据源

    Parameter DMSP 5D-3 F16 (USA 172) FENGYUN 1C DEB
    Semimajor Axis (a) 7222.184 km 7211.088 km
    Eccentricity (e) 0.000599 0.003732
    Inclination (i) 98.9865° 99.2231°
    RAAN 281.2699° 92.9670°
    Perigee Argument 253.5702° 287.9832°
    Mean Anomaly (M) 157.4765° 188.5126°
    Apogee 848.376 km 859.860 km
    Perigee 839.718 km 806.042 km
    Orbit Epoch 2026-09-13T20:47:06+0000 2026-09-13T10:26:01+0000

    DMSP 5D-3 F16 (USA 172) & FENGYUN 1C DEB Collision Probability (Pc) Trend

    DMSP 5D-3 F16 (USA 172) & FENGYUN 1C DEB Collision Probability (Pc) TrendNot Available

    DMSP 5D-3 F16 (USA 172) & FENGYUN 1C DEB Miss Distance (Miss Distance) Trend

    DMSP 5D-3 F16 (USA 172) & FENGYUN 1C DEB Miss Distance (Miss Distance) TrendNot Available

    DMSP 5D-3 F16 (USA 172)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    DMSP 5D-3 F16 (USA 172)Collision Probability Trend

    Object 1 Probability TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with DMSP 5D-3 F16 (USA 172)

    No nearby objects data