Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.176493E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T10:49:34+0800
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    1 Object 1

    AOE ID 1272
    NORAD ID 1272
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 20348
    NORAD ID 20348
    Object Type DEBRIS
    Country
    CIS CIS

    Conjunction Constraints

    Parameter PORCUPINE 1 SL-3 DEB
    Time of Closest Approach 2026-09-11T23:38:07+0000
    Collision Probability (Pc) 1.176493E-6
    Conjunction Distance (km) 2.786 km
    Relative Speed (km/s) 9.997 km/s
    Conjunction Risk Parameters R (Radial): -0.496 | I (In-track): 2.007 | C (Cross-track): 1.868
    Collision Risk Index (CRI) 0.36
    X Position (km) 1832.453 1834.839
    Position Y (km) -1916.735 -1915.572
    Position Z (km) -6801.515 -6800.668
    Velocity X (km/s) 3.362 6.545
    Velocity Y (km/s) 6.506 -2.369
    Velocity Z (km/s) -0.911 2.41

    Orbital Parameters 国际轨道数据源

    Parameter PORCUPINE 1 SL-3 DEB
    Semimajor Axis (a) 7290.895 km 7264.080 km
    Eccentricity (e) 0.002201 0.004909
    Inclination (i) 70.0783° 81.2423°
    RAAN 68.2570° 339.2263°
    Perigee Argument 3.6117° 153.0592°
    Mean Anomaly (M) 356.5143° 207.3140°
    Apogee 928.807 km 921.606 km
    Perigee 896.709 km 850.280 km
    Orbit Epoch 2026-09-10T13:40:23+0000 2026-09-09T17:10:31+0000

    PORCUPINE 1 & SL-3 DEB Collision Probability (Pc) Trend

    PORCUPINE 1 & SL-3 DEB Collision Probability (Pc) TrendNot Available

    PORCUPINE 1 & SL-3 DEB Miss Distance (Miss Distance) Trend

    PORCUPINE 1 & SL-3 DEB Miss Distance (Miss Distance) TrendNot Available

    PORCUPINE 1Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SL-3 DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    PORCUPINE 1Collision Probability Trend

    Object 1 Probability TrendNot Available

    SL-3 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with PORCUPINE 1

    No nearby objects data