Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.731692E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T05:53:38+0800
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    1 Object 1

    AOE ID 31281
    NORAD ID 31281
    Object Type DEBRIS
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 52623
    NORAD ID 52623
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FENGYUN 1C DEB STARLINK-3986
    Time of Closest Approach 2026-10-21T02:07:53+0000
    Collision Probability (Pc) 1.731692E-6
    Conjunction Distance (km) 2.503 km
    Relative Speed (km/s) 14.503 km/s
    Conjunction Risk Parameters R (Radial): -2.494 | I (In-track): -0.059 | C (Cross-track): 0.184
    Collision Risk Index (CRI) 0.4
    X Position (km) 1885.007 1885.839
    Position Y (km) -5384.641 -5386.5
    Position Z (km) -3778.721 -3780.174
    Velocity X (km/s) -2.615 6.144
    Velocity Y (km/s) 3.432 -0.947
    Velocity Z (km/s) -6.275 4.421

    Orbital Parameters 国际轨道数据源

    Parameter FENGYUN 1C DEB STARLINK-3986
    Semimajor Axis (a) 6812.895 km 6840.865 km
    Eccentricity (e) 0.006395 0.000127
    Inclination (i) 98.4031° 53.1600°
    RAAN 114.1953° 323.6014°
    Perigee Argument 92.1976° 84.2306°
    Mean Anomaly (M) 268.6593° 275.8841°
    Apogee 478.327 km 463.594 km
    Perigee 391.189 km 461.862 km
    Orbit Epoch 2026-10-20T11:12:51+0000 2026-10-20T02:52:20+0000

    FENGYUN 1C DEB & STARLINK-3986 Collision Probability (Pc) Trend

    FENGYUN 1C DEB & STARLINK-3986 Collision Probability (Pc) TrendNot Available

    FENGYUN 1C DEB & STARLINK-3986 Miss Distance (Miss Distance) Trend

    FENGYUN 1C DEB & STARLINK-3986 Miss Distance (Miss Distance) TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-3986Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-3986Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FENGYUN 1C DEB

    No nearby objects data