Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    7.490613E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T04:54:34+0800
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    1 Object 1

    AOE ID 7411
    NORAD ID 7411
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 43071
    NORAD ID 43071
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter OPS 6983 (DMSP 5C F1) IRIDIUM 138
    Time of Closest Approach 2026-09-17T20:01:14+0000
    Collision Probability (Pc) 7.490613E-6
    Conjunction Distance (km) 1.453 km
    Relative Speed (km/s) 14.924 km/s
    Conjunction Risk Parameters R (Radial): -0.953 | I (In-track): -0.041 | C (Cross-track): 1.096
    Collision Risk Index (CRI) 0.52
    X Position (km) 1646.579 1647.427
    Position Y (km) -6323.937 -6322.874
    Position Z (km) 2914.891 2914.378
    Velocity X (km/s) -0.406 -0.27
    Velocity Y (km/s) -3.245 3.076
    Velocity Z (km/s) -6.72 6.798

    Orbital Parameters 国际轨道数据源

    Parameter OPS 6983 (DMSP 5C F1) IRIDIUM 138
    Semimajor Axis (a) 7170.777 km 7155.806 km
    Eccentricity (e) 0.004200 0.000227
    Inclination (i) 98.5099° 86.3930°
    RAAN 98.2738° 284.1611°
    Perigee Argument 102.1462° 92.3411°
    Mean Anomaly (M) 258.4430° 267.8045°
    Apogee 822.756 km 779.295 km
    Perigee 762.524 km 776.043 km
    Orbit Epoch 2026-09-15T06:50:02+0000 2026-09-15T00:55:51+0000

    OPS 6983 (DMSP 5C F1) & IRIDIUM 138 Collision Probability (Pc) Trend

    OPS 6983 (DMSP 5C F1) & IRIDIUM 138 Collision Probability (Pc) TrendNot Available

    OPS 6983 (DMSP 5C F1) & IRIDIUM 138 Miss Distance (Miss Distance) Trend

    OPS 6983 (DMSP 5C F1) & IRIDIUM 138 Miss Distance (Miss Distance) TrendNot Available

    OPS 6983 (DMSP 5C F1)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 138Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    OPS 6983 (DMSP 5C F1)Collision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 138Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with OPS 6983 (DMSP 5C F1)

    No nearby objects data