Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.623935E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-14T11:58:54+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 31094
    NORAD ID 31094
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter DMSP 5D-2 F11 (USA 73) FENGYUN 1C DEB
    Time of Closest Approach 2026-09-16T10:21:41+0000
    Collision Probability (Pc) 2.623935E-6
    Conjunction Distance (km) 2.06 km
    Relative Speed (km/s) 14.519 km/s
    Conjunction Risk Parameters R (Radial): -1.673 | I (In-track): 0.256 | C (Cross-track): -1.172
    Collision Risk Index (CRI) 0.43
    X Position (km) -2091.213 -2089.637
    Position Y (km) 4476.128 4475.591
    Position Z (km) 5254.161 5252.948
    Velocity X (km/s) -0.756 3.741
    Velocity Y (km/s) 5.489 -4.056
    Velocity Z (km/s) -4.954 5.02

    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 7261.125 km
    Eccentricity (e) 0.001267 0.010639
    Inclination (i) 98.6869° 98.8403°
    RAAN 283.1753° 121.6359°
    Perigee Argument 22.1233° 2.4240°
    Mean Anomaly (M) 338.0486° 357.7421°
    Apogee 843.070 km 960.236 km
    Perigee 824.794 km 805.740 km
    Orbit Epoch 2026-09-13T20:45:06+0000 2026-09-13T10:15:43+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