Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    9.76917E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-28T00:33:24+0800
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    1 Object 1

    AOE ID 37181
    NORAD ID 37181
    Object Type ROCKET BODY
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 59496
    NORAD ID 59496
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4B R/B STARLINK-31728
    Time of Closest Approach 2026-10-27T18:39:22+0000
    Collision Probability (Pc) 9.76917E-6
    Conjunction Distance (km) 1.305 km
    Relative Speed (km/s) 12.893 km/s
    Conjunction Risk Parameters R (Radial): -1.304 | I (In-track): -0.005 | C (Cross-track): 0.009
    Collision Risk Index (CRI) 0.55
    X Position (km) 5191.306 5190.315
    Position Y (km) -320.587 -320.533
    Position Z (km) -4479.292 -4478.447
    Velocity X (km/s) 4.771 -0.843
    Velocity Y (km/s) -1.658 7.42
    Velocity Z (km/s) 5.721 -1.51

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4B R/B STARLINK-31728
    Semimajor Axis (a) 6885.727 km 6861.164 km
    Eccentricity (e) 0.007129 0.000243
    Inclination (i) 97.7676° 43.0147°
    RAAN 349.0455° 112.2069°
    Perigee Argument 16.4736° 231.1414°
    Mean Anomaly (M) 343.8791° 128.9221°
    Apogee 556.677 km 484.692 km
    Perigee 458.503 km 481.362 km
    Orbit Epoch 2026-10-27T03:01:47+0000 2026-10-27T04:59:57+0000

    CZ-4B R/B & STARLINK-31728 Collision Probability (Pc) Trend

    CZ-4B R/B & STARLINK-31728 Collision Probability (Pc) TrendNot Available

    CZ-4B R/B & STARLINK-31728 Miss Distance (Miss Distance) Trend

    CZ-4B R/B & STARLINK-31728 Miss Distance (Miss Distance) TrendNot Available

    CZ-4B R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31728Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4B R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31728Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4B R/B

    No nearby objects data