Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.810034E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-29T12:42:59+0800
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    1 Object 1

    AOE ID 40531
    NORAD ID 40531
    Object Type DEBRIS
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 69888
    NORAD ID 69888
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4B DEB SPEAR-1B
    Time of Closest Approach 2026-10-29T05:53:59+0000
    Collision Probability (Pc) 2.810034E-6
    Conjunction Distance (km) 2.01 km
    Relative Speed (km/s) 14.684 km/s
    Conjunction Risk Parameters R (Radial): -2.009 | I (In-track): -0.016 | C (Cross-track): -0.044
    Collision Risk Index (CRI) 0.44
    X Position (km) -1641.494 -1641.033
    Position Y (km) -1582.657 -1582.156
    Position Z (km) -6601.594 -6599.703
    Velocity X (km/s) 7.349 -6.838
    Velocity Y (km/s) -1.302 -2.264
    Velocity Z (km/s) -1.422 2.243

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4B DEB SPEAR-1B
    Semimajor Axis (a) 7075.342 km 6970.884 km
    Eccentricity (e) 0.018066 0.000597
    Inclination (i) 74.9694° 97.7457°
    RAAN 354.0807° 199.9682°
    Perigee Argument 300.2729° 119.1384°
    Mean Anomaly (M) 58.0667° 241.0432°
    Apogee 825.031 km 596.906 km
    Perigee 569.379 km 588.588 km
    Orbit Epoch 2026-10-28T13:53:32+0000 2026-10-28T10:54:21+0000

    CZ-4B DEB & SPEAR-1B Collision Probability (Pc) Trend

    CZ-4B DEB & SPEAR-1B Collision Probability (Pc) TrendNot Available

    CZ-4B DEB & SPEAR-1B Miss Distance (Miss Distance) Trend

    CZ-4B DEB & SPEAR-1B Miss Distance (Miss Distance) TrendNot Available

    CZ-4B DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SPEAR-1BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4B DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    SPEAR-1BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4B DEB

    No nearby objects data