Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.475188E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T05:29:31+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 26129
    NORAD ID 26129
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 43249
    NORAD ID 43249
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4 DEB IRIDIUM 144
    Time of Closest Approach 2026-09-17T04:12:54+0000
    Collision Probability (Pc) 3.475188E-6
    Conjunction Distance (km) 1.865 km
    Relative Speed (km/s) 14.987 km/s
    Conjunction Risk Parameters R (Radial): -1.762 | I (In-track): 0.03 | C (Cross-track): -0.607
    Collision Risk Index (CRI) 0.46
    X Position (km) -1736.051 -1736.211
    Position Y (km) -4191.516 -4190.344
    Position Z (km) -5546.457 -5545.015
    Velocity X (km/s) 0.493 -1.512
    Velocity Y (km/s) 6.086 -5.585
    Velocity Z (km/s) -4.487 4.698

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB IRIDIUM 144
    Semimajor Axis (a) 7408.639 km 7155.804 km
    Eccentricity (e) 0.043521 0.000218
    Inclination (i) 99.0093° 86.3908°
    RAAN 77.0747° 252.8499°
    Perigee Argument 276.8509° 88.0313°
    Mean Anomaly (M) 78.3319° 272.1133°
    Apogee 1352.931 km 779.227 km
    Perigee 708.073 km 776.107 km
    Orbit Epoch 2026-09-15T10:28:29+0000 2026-09-14T22:52:11+0000

    CZ-4 DEB & IRIDIUM 144 Collision Probability (Pc) Trend

    CZ-4 DEB & IRIDIUM 144 Collision Probability (Pc) TrendNot Available

    CZ-4 DEB & IRIDIUM 144 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & IRIDIUM 144 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 144Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 144Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data