Conjunction Event Detail

    ✅
    Very Low Risk
    Very low collision probability. Continue monitoring.
    3.401281E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-30T19:12:44+0800
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    1 Object 1

    AOE ID 26444
    NORAD ID 26444
    Object Type DEBRIS
    Country
    CN CN
    ← VS →

    2 Object 2

    Name LYRA-4
    AOE ID 64691
    NORAD ID 64691
    Object Type PAYLOAD
    Country
    AU AU

    Conjunction Constraints

    Parameter CZ-4 DEB LYRA-4
    Time of Closest Approach 2026-10-30T17:12:59+0000
    Collision Probability (Pc) 3.401281E-7
    Conjunction Distance (km) 2.849 km
    Relative Speed (km/s) 0.732 km/s
    Conjunction Risk Parameters R (Radial): -1.06 | I (In-track): 2.643 | C (Cross-track): -0.064
    Collision Risk Index (CRI) 0.26
    X Position (km) 3127.976 3125.606
    Position Y (km) 983.773 982.214
    Position Z (km) 6205.555 6205.798
    Velocity X (km/s) -5.299 -5.697
    Velocity Y (km/s) -4.175 -3.563
    Velocity Z (km/s) 3.378 3.417

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB LYRA-4
    Semimajor Axis (a) 7042.907 km 7030.342 km
    Eccentricity (e) 0.006665 0.001424
    Inclination (i) 98.5193° 96.0099°
    RAAN 32.8922° 28.0410°
    Perigee Argument 359.0601° 114.3934°
    Mean Anomaly (M) 155.7629° 245.8766°
    Apogee 711.711 km 662.215 km
    Perigee 617.829 km 642.195 km
    Orbit Epoch 2026-10-29T17:06:40+0000 2026-10-29T11:34:55+0000

    CZ-4 DEB & LYRA-4 Collision Probability (Pc) Trend

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

    CZ-4 DEB & LYRA-4 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & LYRA-4 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    LYRA-4Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    LYRA-4Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data