Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.983586E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T06:01:41+0800
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    1 Object 1

    AOE ID 4155
    NORAD ID 4155
    Object Type DEBRIS
    Country
    US US
    VS

    2 Object 2

    AOE ID 24871
    NORAD ID 24871
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter THORAD AGENA D DEB IRIDIUM 920
    Time of Closest Approach 2026-09-16T00:52:00+0000
    Collision Probability (Pc) 1.983586E-6
    Conjunction Distance (km) 2.336 km
    Relative Speed (km/s) 14.593 km/s
    Conjunction Risk Parameters R (Radial): -2.335 | I (In-track): 0.005 | C (Cross-track): 0.017
    Collision Risk Index (CRI) 0.41
    X Position (km) -6313.405 -6315.477
    Position Y (km) -2588.236 -2589.067
    Position Z (km) -2107.951 -2108.638
    Velocity X (km/s) -0.855 2.214
    Velocity Y (km/s) -3.234 0.378
    Velocity Z (km/s) 6.683 -7.119

    Orbital Parameters 国际轨道数据源

    Parameter THORAD AGENA D DEB IRIDIUM 920
    Semimajor Axis (a) 7141.521 km 7130.233 km
    Eccentricity (e) 0.005287 0.001229
    Inclination (i) 70.0461° 86.4003°
    RAAN 210.4768° 21.4866°
    Perigee Argument 66.6613° 29.2887°
    Mean Anomaly (M) 294.0066° 330.8999°
    Apogee 801.145 km 760.859 km
    Perigee 725.623 km 743.333 km
    Orbit Epoch 2026-09-15T06:35:40+0000 2026-09-15T07:18:04+0000

    THORAD AGENA D DEB & IRIDIUM 920 Collision Probability (Pc) Trend

    THORAD AGENA D DEB & IRIDIUM 920 Collision Probability (Pc) TrendNot Available

    THORAD AGENA D DEB & IRIDIUM 920 Miss Distance (Miss Distance) Trend

    THORAD AGENA D DEB & IRIDIUM 920 Miss Distance (Miss Distance) TrendNot Available

    THORAD AGENA D DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 920Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    THORAD AGENA D DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 920Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with THORAD AGENA D DEB

    No nearby objects data