Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    4.110333E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-18T08:56:47+0800
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    1 Object 1

    AOE ID 59881
    NORAD ID 59881
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 64535
    NORAD ID 64535
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter PREFIRE-2 UND ROADS 1
    Time of Closest Approach 2026-10-19T09:16:59+0000
    Collision Probability (Pc) 4.110333E-6
    Conjunction Distance (km) 1.661 km
    Relative Speed (km/s) 11.552 km/s
    Conjunction Risk Parameters R (Radial): 1.634 | I (In-track): 0.191 | C (Cross-track): 0.229
    Collision Risk Index (CRI) 0.47
    X Position (km) 1353.784 1353.423
    Position Y (km) 150.924 151.183
    Position Z (km) 6726.807 6725.207
    Velocity X (km/s) 6.199 -5.047
    Velocity Y (km/s) -4.284 -5.596
    Velocity Z (km/s) -1.154 1.138

    Orbital Parameters 国际轨道数据源

    Parameter PREFIRE-2 UND ROADS 1
    Semimajor Axis (a) 6878.673 km 6872.871 km
    Eccentricity (e) 0.001295 0.000577
    Inclination (i) 97.3914° 97.4784°
    RAAN 144.7281° 44.7081°
    Perigee Argument 131.4121° 107.2164°
    Mean Anomaly (M) 228.8230° 252.9704°
    Apogee 509.447 km 498.697 km
    Perigee 491.625 km 490.771 km
    Orbit Epoch 2026-10-17T14:14:30+0000 2026-10-17T06:29:31+0000

    PREFIRE-2 & UND ROADS 1 Collision Probability (Pc) Trend

    PREFIRE-2 & UND ROADS 1 Collision Probability (Pc) TrendNot Available

    PREFIRE-2 & UND ROADS 1 Miss Distance (Miss Distance) Trend

    PREFIRE-2 & UND ROADS 1 Miss Distance (Miss Distance) TrendNot Available

    PREFIRE-2Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    UND ROADS 1Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    PREFIRE-2Collision Probability Trend

    Object 1 Probability TrendNot Available

    UND ROADS 1Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with PREFIRE-2

    No nearby objects data