Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    8.060476E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-15T22:52:24+0800
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    1 Object 1

    AOE ID 43251
    NORAD ID 43251
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 43415
    NORAD ID 43415
    Object Type DEBRIS
    Country
    US US

    Conjunction Constraints

    Parameter IRIDIUM 157 DMSP 5D-3 F19 DEB
    Time of Closest Approach 2026-09-18T02:18:40+0000
    Collision Probability (Pc) 8.060476E-7
    Conjunction Distance (km) 2.631 km
    Relative Speed (km/s) 4.385 km/s
    Conjunction Risk Parameters R (Radial): 0.902 | I (In-track): -2.362 | C (Cross-track): -0.723
    Collision Risk Index (CRI) 0.33
    X Position (km) 416.009 415.901
    Position Y (km) 2578.17 2575.543
    Position Z (km) -6671.801 -6671.854
    Velocity X (km/s) -2.359 2.017
    Velocity Y (km/s) -6.54 -6.728
    Velocity Z (km/s) -2.675 -2.479

    Orbital Parameters 国际轨道数据源

    Parameter IRIDIUM 157 DMSP 5D-3 F19 DEB
    Semimajor Axis (a) 7155.808 km 7154.066 km
    Eccentricity (e) 0.000217 0.000964
    Inclination (i) 86.3911° 98.6113°
    RAAN 253.0358° 280.5905°
    Perigee Argument 88.6594° 147.5454°
    Mean Anomaly (M) 271.4851° 212.6325°
    Apogee 779.224 km 782.825 km
    Perigee 776.118 km 769.033 km
    Orbit Epoch 2026-09-14T13:25:55+0000 2026-09-15T01:10:42+0000

    IRIDIUM 157 & DMSP 5D-3 F19 DEB Collision Probability (Pc) Trend

    IRIDIUM 157 & DMSP 5D-3 F19 DEB Collision Probability (Pc) TrendNot Available

    IRIDIUM 157 & DMSP 5D-3 F19 DEB Miss Distance (Miss Distance) Trend

    IRIDIUM 157 & DMSP 5D-3 F19 DEB Miss Distance (Miss Distance) TrendNot Available

    IRIDIUM 157Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    DMSP 5D-3 F19 DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRIDIUM 157Collision Probability Trend

    Object 1 Probability TrendNot Available

    DMSP 5D-3 F19 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRIDIUM 157

    No nearby objects data