Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    4.750135E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-28T01:37:37+0800
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    1 Object 1

    AOE ID 57798
    NORAD ID 57798
    Object Type ROCKET BODY
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 59659
    NORAD ID 59659
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4C R/B STARLINK-31881
    Time of Closest Approach 2026-10-28T08:47:07+0000
    Collision Probability (Pc) 4.750135E-6
    Conjunction Distance (km) 1.648 km
    Relative Speed (km/s) 13.84 km/s
    Conjunction Risk Parameters R (Radial): -1.317 | I (In-track): 0.409 | C (Cross-track): 0.901
    Collision Risk Index (CRI) 0.49
    X Position (km) -2995.466 -2995.436
    Position Y (km) 4965.803 4964.173
    Position Z (km) -3672.809 -3672.574
    Velocity X (km/s) 3.206 -6.703
    Velocity Y (km/s) -2.778 -1.663
    Velocity Z (km/s) -6.375 3.222

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4C R/B STARLINK-31881
    Semimajor Axis (a) 6932.565 km 6861.108 km
    Eccentricity (e) 0.010701 0.000153
    Inclination (i) 98.3134° 42.9992°
    RAAN 305.2265° 170.2384°
    Perigee Argument 217.5460° 268.1486°
    Mean Anomaly (M) 141.8258° 15.6589°
    Apogee 628.617 km 484.024 km
    Perigee 480.239 km 481.918 km
    Orbit Epoch 2026-10-27T06:17:34+0000 2026-10-27T06:00:04+0000

    CZ-4C R/B & STARLINK-31881 Collision Probability (Pc) Trend

    CZ-4C R/B & STARLINK-31881 Collision Probability (Pc) TrendNot Available

    CZ-4C R/B & STARLINK-31881 Miss Distance (Miss Distance) Trend

    CZ-4C R/B & STARLINK-31881 Miss Distance (Miss Distance) TrendNot Available

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

    Object 1 Miss Distance TrendNot Available

    STARLINK-31881Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4C R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31881Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4C R/B

    No nearby objects data