Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    4.474109E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T21:11:33+0800
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    1 Object 1

    AOE ID 29509
    NORAD ID 29509
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 55789
    NORAD ID 55789
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4 DEB STARLINK-5815
    Time of Closest Approach 2026-09-13T22:37:41+0000
    Collision Probability (Pc) 4.474109E-6
    Conjunction Distance (km) 1.686 km
    Relative Speed (km/s) 14.055 km/s
    Conjunction Risk Parameters R (Radial): -0.681 | I (In-track): 0.559 | C (Cross-track): -1.436
    Collision Risk Index (CRI) 0.48
    X Position (km) -2334.668 -2333.51
    Position Y (km) 1246.36 1247.026
    Position Z (km) 6419.815 6420.842
    Velocity X (km/s) -4.542 -0.492
    Velocity Y (km/s) 5.412 -7.451
    Velocity Z (km/s) -2.695 1.266

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB STARLINK-5815
    Semimajor Axis (a) 6926.924 km 6950.201 km
    Eccentricity (e) 0.003409 0.000232
    Inclination (i) 97.6277° 69.9988°
    RAAN 311.1391° 94.6751°
    Perigee Argument 300.3600° 266.0065°
    Mean Anomaly (M) 59.4257° 94.0829°
    Apogee 572.399 km 573.676 km
    Perigee 525.175 km 570.452 km
    Orbit Epoch 2026-09-12T03:04:38+0000 2026-09-11T23:48:32+0000

    CZ-4 DEB & STARLINK-5815 Collision Probability (Pc) Trend

    CZ-4 DEB & STARLINK-5815 Collision Probability (Pc) TrendNot Available

    CZ-4 DEB & STARLINK-5815 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & STARLINK-5815 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5815Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5815Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data