Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    9.534003E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-14T06:00:42+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 30600
    NORAD ID 30600
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter DMSP 5D-2 F11 (USA 73) FENGYUN 1C DEB
    Time of Closest Approach 2026-09-15T14:43:23+0000
    Collision Probability (Pc) 9.534003E-6
    Conjunction Distance (km) 1.267 km
    Relative Speed (km/s) 10.789 km/s
    Conjunction Risk Parameters R (Radial): -0.601 | I (In-track): 0.755 | C (Cross-track): 0.822
    Collision Risk Index (CRI) 0.55
    X Position (km) 1331.675 1330.953
    Position Y (km) -814.231 -815.096
    Position Z (km) -7049.931 -7049.352
    Velocity X (km/s) 1.711 -7.136
    Velocity Y (km/s) -7.126 -1.513
    Velocity Z (km/s) 1.156 -1.41

    Orbital Parameters 国际轨道数据源

    Parameter DMSP 5D-2 F11 (USA 73) FENGYUN 1C DEB
    Semimajor Axis (a) 7212.069 km 7231.263 km
    Eccentricity (e) 0.001268 0.031244
    Inclination (i) 98.6870° 98.3921°
    RAAN 282.8992° 186.6982°
    Perigee Argument 22.9199° 184.7438°
    Mean Anomaly (M) 337.2540° 175.0756°
    Apogee 843.080 km 1079.063 km
    Perigee 824.784 km 627.189 km
    Orbit Epoch 2026-09-13T13:58:31+0000 2026-09-11T17:39:38+0000

    DMSP 5D-2 F11 (USA 73) & FENGYUN 1C DEB Collision Probability (Pc) Trend

    DMSP 5D-2 F11 (USA 73) & FENGYUN 1C DEB Collision Probability (Pc) TrendNot Available

    DMSP 5D-2 F11 (USA 73) & FENGYUN 1C DEB Miss Distance (Miss Distance) Trend

    DMSP 5D-2 F11 (USA 73) & FENGYUN 1C 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

    FENGYUN 1C 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

    FENGYUN 1C DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

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

    No nearby objects data