Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    8.31419E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T11:55:02+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 69595
    NORAD ID 69595
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter IRIDIUM 178 KUIPER-00490
    Time of Closest Approach 2026-09-17T05:33:02+0000
    Collision Probability (Pc) 8.31419E-7
    Conjunction Distance (km) 2.701 km
    Relative Speed (km/s) 4.979 km/s
    Conjunction Risk Parameters R (Radial): 2.671 | I (In-track): -0.378 | C (Cross-track): 0.137
    Collision Risk Index (CRI) 0.33
    X Position (km) -6308.519 -6306.004
    Position Y (km) 1298.675 1298.001
    Position Z (km) -2776.363 -2775.648
    Velocity X (km/s) 2.814 1.141
    Velocity Y (km/s) -1.067 -5.406
    Velocity Z (km/s) -6.91 -5.131

    Orbital Parameters 国际轨道数据源

    Parameter IRIDIUM 178 KUIPER-00490
    Semimajor Axis (a) 7007.338 km 7007.671 km
    Eccentricity (e) 0.000255 0.000046
    Inclination (i) 86.6597° 51.9047°
    RAAN 347.7584° 336.2423°
    Perigee Argument 93.7858° 79.2796°
    Mean Anomaly (M) 266.3655° 280.8218°
    Apogee 630.985 km 629.855 km
    Perigee 627.417 km 629.213 km
    Orbit Epoch 2026-09-15T05:34:43+0000 2026-09-15T12:05:16+0000

    IRIDIUM 178 & KUIPER-00490 Collision Probability (Pc) Trend

    IRIDIUM 178 & KUIPER-00490 Collision Probability (Pc) TrendNot Available

    IRIDIUM 178 & KUIPER-00490 Miss Distance (Miss Distance) Trend

    IRIDIUM 178 & KUIPER-00490 Miss Distance (Miss Distance) TrendNot Available

    IRIDIUM 178Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    KUIPER-00490Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRIDIUM 178Collision Probability Trend

    Object 1 Probability TrendNot Available

    KUIPER-00490Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRIDIUM 178

    No nearby objects data