Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    4.180437E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-15T22:43:00+0800
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    1 Object 1

    AOE ID 28070
    NORAD ID 28070
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 39084
    NORAD ID 39084
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4 DEB LANDSAT 8
    Time of Closest Approach 2026-09-16T08:07:59+0000
    Collision Probability (Pc) 4.180437E-7
    Conjunction Distance (km) 2.697 km
    Relative Speed (km/s) 1.136 km/s
    Conjunction Risk Parameters R (Radial): -2.401 | I (In-track): 1.226 | C (Cross-track): 0.003
    Collision Risk Index (CRI) 0.27
    X Position (km) 743.809 743.023
    Position Y (km) 732.059 732.956
    Position Z (km) -7009.3 -7011.718
    Velocity X (km/s) 5.683 6.351
    Velocity Y (km/s) -4.869 -3.958
    Velocity Z (km/s) 0.139 0.259

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB LANDSAT 8
    Semimajor Axis (a) 7069.183 km 7080.691 km
    Eccentricity (e) 0.005985 0.000132
    Inclination (i) 98.4311° 98.2220°
    RAAN 316.5881° 327.2843°
    Perigee Argument 23.9191° 94.9640°
    Mean Anomaly (M) 336.4768° 265.1709°
    Apogee 733.352 km 703.489 km
    Perigee 648.740 km 701.619 km
    Orbit Epoch 2026-09-13T09:50:42+0000 2026-09-15T06:10:02+0000

    CZ-4 DEB & LANDSAT 8 Collision Probability (Pc) Trend

    CZ-4 DEB & LANDSAT 8 Collision Probability (Pc) TrendNot Available

    CZ-4 DEB & LANDSAT 8 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & LANDSAT 8 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    LANDSAT 8Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    LANDSAT 8Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data