Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.140213E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T11:04:09+0800
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    1 Object 1

    AOE ID 1577
    NORAD ID 1577
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 69852
    NORAD ID 69852
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter PORCUPINE 2 QIANFAN-223
    Time of Closest Approach 2026-09-05T18:57:43+0000
    Collision Probability (Pc) 3.140213E-6
    Conjunction Distance (km) 1.915 km
    Relative Speed (km/s) 14.317 km/s
    Conjunction Risk Parameters R (Radial): -0.53 | I (In-track): 0.366 | C (Cross-track): 1.803
    Collision Risk Index (CRI) 0.45
    X Position (km) 278.43 277.137
    Position Y (km) 171.001 172.317
    Position Z (km) -7458.268 -7457.754
    Velocity X (km/s) -6.175 4.148
    Velocity Y (km/s) -3.913 5.985
    Velocity Z (km/s) -0.347 0.309

    Orbital Parameters 国际轨道数据源

    Parameter PORCUPINE 2 QIANFAN-223
    Semimajor Axis (a) 7501.354 km 7420.723 km
    Eccentricity (e) 0.006800 0.003364
    Inclination (i) 90.0350° 89.0065°
    RAAN 212.3528° 55.3518°
    Perigee Argument 238.2799° 53.6595°
    Mean Anomaly (M) 135.5691° 306.7658°
    Apogee 1174.230 km 1067.554 km
    Perigee 1072.204 km 1017.618 km
    Orbit Epoch 2026-09-04T20:07:58+0000 2026-09-04T15:03:08+0000

    PORCUPINE 2 & QIANFAN-223 Collision Probability (Pc) Trend

    PORCUPINE 2 & QIANFAN-223 Collision Probability (Pc) TrendNot Available

    PORCUPINE 2 & QIANFAN-223 Miss Distance (Miss Distance) Trend

    PORCUPINE 2 & QIANFAN-223 Miss Distance (Miss Distance) TrendNot Available

    PORCUPINE 2Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-223Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    PORCUPINE 2Collision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-223Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with PORCUPINE 2

    No nearby objects data