Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    5.70123E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T07:14:24+0800
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    1 Object 1

    AOE ID 30621
    NORAD ID 30621
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 42963
    NORAD ID 42963
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FENGYUN 1C DEB IRIDIUM 139
    Time of Closest Approach 2026-09-12T15:57:29+0000
    Collision Probability (Pc) 5.70123E-6
    Conjunction Distance (km) 1.573 km
    Relative Speed (km/s) 14.607 km/s
    Conjunction Risk Parameters R (Radial): -0.117 | I (In-track): 0.347 | C (Cross-track): 1.53
    Collision Risk Index (CRI) 0.5
    X Position (km) 1511.472 1511.463
    Position Y (km) -748.327 -746.781
    Position Z (km) -6963.293 -6963.581
    Velocity X (km/s) -7.14 7.135
    Velocity Y (km/s) -1.846 -1.309
    Velocity Z (km/s) -1.356 1.69

    Orbital Parameters 国际轨道数据源

    Parameter FENGYUN 1C DEB IRIDIUM 139
    Semimajor Axis (a) 7253.435 km 7155.805 km
    Eccentricity (e) 0.013257 0.000219
    Inclination (i) 98.7017° 86.4030°
    RAAN 191.5615° 349.2260°
    Perigee Argument 260.8732° 93.3322°
    Mean Anomaly (M) 255.0253° 266.8124°
    Apogee 971.459 km 779.236 km
    Perigee 779.137 km 776.100 km
    Orbit Epoch 2026-09-11T07:00:06+0000 2026-09-11T13:31:31+0000

    FENGYUN 1C DEB & IRIDIUM 139 Collision Probability (Pc) Trend

    FENGYUN 1C DEB & IRIDIUM 139 Collision Probability (Pc) TrendNot Available

    FENGYUN 1C DEB & IRIDIUM 139 Miss Distance (Miss Distance) Trend

    FENGYUN 1C DEB & IRIDIUM 139 Miss Distance (Miss Distance) TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 139Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 139Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FENGYUN 1C DEB

    No nearby objects data