Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    2.918134E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-15T22:33:31+0800
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    1 Object 1

    AOE ID 31420
    NORAD ID 31420
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 42805
    NORAD ID 42805
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FENGYUN 1C DEB IRIDIUM 120
    Time of Closest Approach 2026-09-17T15:02:30+0000
    Collision Probability (Pc) 2.918134E-5
    Conjunction Distance (km) 0.975 km
    Relative Speed (km/s) 14.477 km/s
    Conjunction Risk Parameters R (Radial): 0.157 | I (In-track): 0.235 | C (Cross-track): -0.932
    Collision Risk Index (CRI) 0.64
    X Position (km) 168.782 167.928
    Position Y (km) 1220.689 1220.223
    Position Z (km) 7040.228 7040.171
    Velocity X (km/s) 4.957 -1.77
    Velocity Y (km/s) -5.517 7.154
    Velocity Z (km/s) 0.738 -1.195

    Orbital Parameters 国际轨道数据源

    Parameter FENGYUN 1C DEB IRIDIUM 120
    Semimajor Axis (a) 7131.356 km 7155.805 km
    Eccentricity (e) 0.013364 0.000204
    Inclination (i) 97.5267° 86.3912°
    RAAN 127.4639° 284.3093°
    Perigee Argument 201.4094° 90.4290°
    Mean Anomaly (M) 334.2109° 269.7140°
    Apogee 848.519 km 779.126 km
    Perigee 657.919 km 776.210 km
    Orbit Epoch 2026-09-13T09:50:49+0000 2026-09-15T05:38:59+0000

    FENGYUN 1C DEB & IRIDIUM 120 Collision Probability (Pc) Trend

    FENGYUN 1C DEB & IRIDIUM 120 Collision Probability (Pc) TrendNot Available

    FENGYUN 1C DEB & IRIDIUM 120 Miss Distance (Miss Distance) Trend

    FENGYUN 1C DEB & IRIDIUM 120 Miss Distance (Miss Distance) TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 120Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 120Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FENGYUN 1C DEB

    No nearby objects data