Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.892342E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-30T21:24:58+0800
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    1 Object 1

    AOE ID 26121
    NORAD ID 26121
    Object Type DEBRIS
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 59731
    NORAD ID 59731
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4 DEB STARLINK-31817
    Time of Closest Approach 2026-10-30T19:27:20+0000
    Collision Probability (Pc) 2.892342E-6
    Conjunction Distance (km) 1.94 km
    Relative Speed (km/s) 13.291 km/s
    Conjunction Risk Parameters R (Radial): 1.049 | I (In-track): -0.788 | C (Cross-track): -1.428
    Collision Risk Index (CRI) 0.44
    X Position (km) -2984.81 -2986.669
    Position Y (km) -4445.632 -4446.16
    Position Z (km) -4291.854 -4291.69
    Velocity X (km/s) 1.373 5.003
    Velocity Y (km/s) 4.685 -5.36
    Velocity Z (km/s) -5.838 2.072

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB STARLINK-31817
    Semimajor Axis (a) 6843.929 km 6861.174 km
    Eccentricity (e) 0.002813 0.000130
    Inclination (i) 98.6794° 43.0024°
    RAAN 61.7312° 302.3349°
    Perigee Argument 94.2836° 270.7724°
    Mean Anomaly (M) 266.1618° 105.5159°
    Apogee 485.047 km 483.932 km
    Perigee 446.537 km 482.142 km
    Orbit Epoch 2026-10-29T14:18:53+0000 2026-10-29T14:00:02+0000

    CZ-4 DEB & STARLINK-31817 Collision Probability (Pc) Trend

    CZ-4 DEB & STARLINK-31817 Collision Probability (Pc) TrendNot Available

    CZ-4 DEB & STARLINK-31817 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & STARLINK-31817 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31817Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31817Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data