Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.384414E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-08-31T21:06:29+0800
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    1 Object 1

    AOE ID 46979
    NORAD ID 46979
    Object Type DEBRIS
    Country
    US US
    VS

    2 Object 2

    AOE ID 53731
    NORAD ID 53731
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter IRIDIUM 33 DEB STARLINK-4636
    Time of Closest Approach 2026-08-31T20:41:40+0000
    Collision Probability (Pc) 1.384414E-6
    Conjunction Distance (km) 2.646 km
    Relative Speed (km/s) 11.625 km/s
    Conjunction Risk Parameters R (Radial): -2.118 | I (In-track): 1.03 | C (Cross-track): -1.204
    Collision Risk Index (CRI) 0.38
    X Position (km) -1337.984 -1337.36
    Position Y (km) 4070.778 4073.097
    Position Z (km) -5390.638 -5391.748
    Velocity X (km/s) 1.102 -7.455
    Velocity Y (km/s) -5.868 -0.755
    Velocity Z (km/s) -4.701 1.282

    Orbital Parameters 国际轨道数据源

    Parameter IRIDIUM 33 DEB STARLINK-4636
    Semimajor Axis (a) 6875.454 km 6884.021 km
    Eccentricity (e) 0.000912 0.000281
    Inclination (i) 86.3121° 53.2076°
    RAAN 284.2725° 181.6822°
    Perigee Argument 16.3485° 359.0003°
    Mean Anomaly (M) 343.8052° 1.0987°
    Apogee 503.588 km 507.820 km
    Perigee 491.046 km 503.948 km
    Orbit Epoch 2026-08-30T08:59:18+0000 2026-08-31T03:40:39+0000

    IRIDIUM 33 DEB & STARLINK-4636 Collision Probability (Pc) Trend

    IRIDIUM 33 DEB & STARLINK-4636 Collision Probability (Pc) TrendNot Available

    IRIDIUM 33 DEB & STARLINK-4636 Miss Distance (Miss Distance) Trend

    IRIDIUM 33 DEB & STARLINK-4636 Miss Distance (Miss Distance) TrendNot Available

    IRIDIUM 33 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4636Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRIDIUM 33 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4636Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRIDIUM 33 DEB

    No nearby objects data