Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.407183E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-20T16:29:19+0800
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    1 Object 1

    AOE ID 30493
    NORAD ID 30493
    Object Type DEBRIS
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 63604
    NORAD ID 63604
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter FENGYUN 1C DEB SHIYAN 27F
    Time of Closest Approach 2026-09-20T21:52:34+0000
    Collision Probability (Pc) 1.407183E-6
    Conjunction Distance (km) 2.844 km
    Relative Speed (km/s) 14.332 km/s
    Conjunction Risk Parameters R (Radial): -0.205 | I (In-track): 0.514 | C (Cross-track): -2.789
    Collision Risk Index (CRI) 0.38
    X Position (km) 665.98 663.175
    Position Y (km) 6416.991 6417.442
    Position Z (km) -3685.129 -3685.264
    Velocity X (km/s) 1.607 1.046
    Velocity Y (km/s) 3.404 -3.686
    Velocity Z (km/s) 6.203 -6.24

    Orbital Parameters 国际轨道数据源

    Parameter FENGYUN 1C DEB SHIYAN 27F
    Semimajor Axis (a) 7291.802 km 7423.844 km
    Eccentricity (e) 0.018187 0.000094
    Inclination (i) 98.5836° 99.6946°
    RAAN 77.2917° 268.7899°
    Perigee Argument 160.3372° 92.0755°
    Mean Anomaly (M) 357.6270° 268.0492°
    Apogee 1046.281 km 1046.408 km
    Perigee 781.049 km 1045.006 km
    Orbit Epoch 2026-09-18T22:33:11+0000 2026-09-19T23:36:51+0000

    FENGYUN 1C DEB & SHIYAN 27F Collision Probability (Pc) Trend

    FENGYUN 1C DEB & SHIYAN 27F Collision Probability (Pc) TrendNot Available

    FENGYUN 1C DEB & SHIYAN 27F Miss Distance (Miss Distance) Trend

    FENGYUN 1C DEB & SHIYAN 27F Miss Distance (Miss Distance) TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SHIYAN 27FMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    SHIYAN 27FCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FENGYUN 1C DEB

    No nearby objects data