Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.817884E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T09:09:13+0800
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    1 Object 1

    AOE ID 40471
    NORAD ID 40471
    Object Type DEBRIS
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 43909
    NORAD ID 43909
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter DMSP 5D-2 F13 DEB YUNHAI 2-1A
    Time of Closest Approach 2026-10-20T17:06:20+0000
    Collision Probability (Pc) 1.817884E-6
    Conjunction Distance (km) 2.263 km
    Relative Speed (km/s) 11.339 km/s
    Conjunction Risk Parameters R (Radial): -2.13 | I (In-track): -0.49 | C (Cross-track): 0.581
    Collision Risk Index (CRI) 0.4
    X Position (km) 3268.192 3267.238
    Position Y (km) -3272.366 -3272.041
    Position Z (km) 5476.729 5474.704
    Velocity X (km/s) -5.168 4.916
    Velocity Y (km/s) 2.65 5.595
    Velocity Z (km/s) 4.676 0.41

    Orbital Parameters 国际轨道数据源

    Parameter DMSP 5D-2 F13 DEB YUNHAI 2-1A
    Semimajor Axis (a) 7171.216 km 7172.999 km
    Eccentricity (e) 0.001900 0.000032
    Inclination (i) 98.8779° 50.0090°
    RAAN 323.1955° 239.1329°
    Perigee Argument 320.5000° 319.7706°
    Mean Anomaly (M) 39.4796° 40.3186°
    Apogee 806.706 km 795.091 km
    Perigee 779.452 km 794.633 km
    Orbit Epoch 2026-10-18T07:45:32+0000 2026-10-18T21:04:14+0000

    DMSP 5D-2 F13 DEB & YUNHAI 2-1A Collision Probability (Pc) Trend

    DMSP 5D-2 F13 DEB & YUNHAI 2-1A Collision Probability (Pc) TrendNot Available

    DMSP 5D-2 F13 DEB & YUNHAI 2-1A Miss Distance (Miss Distance) Trend

    DMSP 5D-2 F13 DEB & YUNHAI 2-1A Miss Distance (Miss Distance) TrendNot Available

    DMSP 5D-2 F13 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    YUNHAI 2-1AMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    DMSP 5D-2 F13 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    YUNHAI 2-1ACollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with DMSP 5D-2 F13 DEB

    No nearby objects data