Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.566182E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T08:56:47+0800
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    1 Object 1

    AOE ID 40996
    NORAD ID 40996
    Object Type DEBRIS
    Country
    US US
    ← VS →

    2 Object 2

    Name PTD-4
    AOE ID 60565
    NORAD ID 60565
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter IRIDIUM 33 DEB PTD-4
    Time of Closest Approach 2026-10-22T04:12:47+0000
    Collision Probability (Pc) 1.566182E-6
    Conjunction Distance (km) 2.705 km
    Relative Speed (km/s) 15.227 km/s
    Conjunction Risk Parameters R (Radial): -1.918 | I (In-track): 0.084 | C (Cross-track): 1.905
    Collision Risk Index (CRI) 0.39
    X Position (km) -3922.244 -3922.092
    Position Y (km) -2785.292 -2782.867
    Position Z (km) 4893.559 4892.37
    Velocity X (km/s) 4.82 -5.199
    Velocity Y (km/s) 2.573 -1.904
    Velocity Z (km/s) 5.317 -5.238

    Orbital Parameters 国际轨道数据源

    Parameter IRIDIUM 33 DEB PTD-4
    Semimajor Axis (a) 6871.056 km 6863.247 km
    Eccentricity (e) 0.000588 0.000181
    Inclination (i) 86.3453° 97.6929°
    RAAN 213.0993° 24.9297°
    Perigee Argument 41.6071° 338.2630°
    Mean Anomaly (M) 318.5621° 21.8531°
    Apogee 496.961 km 486.352 km
    Perigee 488.877 km 483.868 km
    Orbit Epoch 2026-10-19T05:07:21+0000 2026-10-19T17:26:12+0000

    IRIDIUM 33 DEB & PTD-4 Collision Probability (Pc) Trend

    IRIDIUM 33 DEB & PTD-4 Collision Probability (Pc) TrendNot Available

    IRIDIUM 33 DEB & PTD-4 Miss Distance (Miss Distance) Trend

    IRIDIUM 33 DEB & PTD-4 Miss Distance (Miss Distance) TrendNot Available

    IRIDIUM 33 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    PTD-4Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRIDIUM 33 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    PTD-4Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRIDIUM 33 DEB

    No nearby objects data