Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    8.380744E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T21:26:34+0800
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    1 Object 1

    AOE ID 30744
    NORAD ID 30744
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 48478
    NORAD ID 48478
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FENGYUN 1C DEB STARLINK-2728
    Time of Closest Approach 2026-09-05T13:15:31+0000
    Collision Probability (Pc) 8.380744E-7
    Conjunction Distance (km) 2.886 km
    Relative Speed (km/s) 5.913 km/s
    Conjunction Risk Parameters R (Radial): 0.923 | I (In-track): 2.52 | C (Cross-track): -1.062
    Collision Risk Index (CRI) 0.33
    X Position (km) 1676.798 1676.352
    Position Y (km) 6634.722 6635.678
    Position Z (km) 269.523 272.209
    Velocity X (km/s) 1.048 -4.499
    Velocity Y (km/s) -0.58 0.878
    Velocity Z (km/s) 7.535 6.101

    Orbital Parameters 国际轨道数据源

    Parameter FENGYUN 1C DEB STARLINK-2728
    Semimajor Axis (a) 6844.870 km 6848.889 km
    Eccentricity (e) 0.000317 0.000125
    Inclination (i) 98.7291° 53.1596°
    RAAN 74.3495° 80.1932°
    Perigee Argument 189.1426° 93.9274°
    Mean Anomaly (M) 329.5888° 266.1871°
    Apogee 468.903 km 471.611 km
    Perigee 464.563 km 469.893 km
    Orbit Epoch 2026-09-04T00:20:54+0000 2026-09-04T05:55:34+0000

    FENGYUN 1C DEB & STARLINK-2728 Collision Probability (Pc) Trend

    FENGYUN 1C DEB & STARLINK-2728 Collision Probability (Pc) TrendNot Available

    FENGYUN 1C DEB & STARLINK-2728 Miss Distance (Miss Distance) Trend

    FENGYUN 1C DEB & STARLINK-2728 Miss Distance (Miss Distance) TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-2728Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-2728Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FENGYUN 1C DEB

    No nearby objects data