Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    8.60739E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T00:11:44+0800
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    1 Object 1

    AOE ID 56729
    NORAD ID 56729
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 68932
    NORAD ID 68932
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter IRIDIUM 178 KUIPER-00420
    Time of Closest Approach 2026-09-16T11:30:34+0000
    Collision Probability (Pc) 8.60739E-7
    Conjunction Distance (km) 2.605 km
    Relative Speed (km/s) 4.82 km/s
    Conjunction Risk Parameters R (Radial): -1.745 | I (In-track): -1.832 | C (Cross-track): -0.614
    Collision Risk Index (CRI) 0.34
    X Position (km) -6422.951 -6420.605
    Position Y (km) 1592.703 1592.869
    Position Z (km) 2303.938 2305.056
    Velocity X (km/s) -2.526 -3.019
    Velocity Y (km/s) 0.147 -4.33
    Velocity Z (km/s) -7.108 -5.393

    Orbital Parameters 国际轨道数据源

    Parameter IRIDIUM 178 KUIPER-00420
    Semimajor Axis (a) 7007.338 km 7007.677 km
    Eccentricity (e) 0.000255 0.000050
    Inclination (i) 86.6597° 51.9017°
    RAAN 347.7584° 9.8277°
    Perigee Argument 93.7858° 106.7078°
    Mean Anomaly (M) 266.3655° 253.3939°
    Apogee 630.985 km 629.889 km
    Perigee 627.417 km 629.191 km
    Orbit Epoch 2026-09-15T05:34:43+0000 2026-09-14T16:40:23+0000

    IRIDIUM 178 & KUIPER-00420 Collision Probability (Pc) Trend

    IRIDIUM 178 & KUIPER-00420 Collision Probability (Pc) TrendNot Available

    IRIDIUM 178 & KUIPER-00420 Miss Distance (Miss Distance) Trend

    IRIDIUM 178 & KUIPER-00420 Miss Distance (Miss Distance) TrendNot Available

    IRIDIUM 178Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    KUIPER-00420Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRIDIUM 178Collision Probability Trend

    Object 1 Probability TrendNot Available

    KUIPER-00420Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRIDIUM 178

    No nearby objects data