Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.101856E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-27T23:04:21+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 20881
    NORAD ID 20881
    Object Type DEBRIS
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 43256
    NORAD ID 43256
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4 DEB IRIDIUM 142
    Time of Closest Approach 2026-10-29T06:58:23+0000
    Collision Probability (Pc) 1.101856E-6
    Conjunction Distance (km) 2.861 km
    Relative Speed (km/s) 9.481 km/s
    Conjunction Risk Parameters R (Radial): 2.554 | I (In-track): -0.987 | C (Cross-track): 0.829
    Collision Risk Index (CRI) 0.36
    X Position (km) -320.25 -320.294
    Position Y (km) -1202.245 -1203.944
    Position Z (km) 7035.278 7037.58
    Velocity X (km/s) -5.083 4.366
    Velocity Y (km/s) 5.401 5.935
    Velocity Z (km/s) 0.66 1.212

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB IRIDIUM 142
    Semimajor Axis (a) 7112.536 km 7155.806 km
    Eccentricity (e) 0.006816 0.000211
    Inclination (i) 98.4705° 86.3972°
    RAAN 310.4834° 235.1635°
    Perigee Argument 235.2184° 86.9782°
    Mean Anomaly (M) 124.2582° 273.1655°
    Apogee 782.878 km 779.181 km
    Perigee 685.920 km 776.157 km
    Orbit Epoch 2026-10-27T06:27:43+0000 2026-10-27T02:41:27+0000

    CZ-4 DEB & IRIDIUM 142 Collision Probability (Pc) Trend

    CZ-4 DEB & IRIDIUM 142 Collision Probability (Pc) TrendNot Available

    CZ-4 DEB & IRIDIUM 142 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & IRIDIUM 142 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 142Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 142Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data