Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.684971E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-13T22:26:02+0800
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    1 Object 1

    AOE ID 44350
    NORAD ID 44350
    Object Type PAYLOAD
    Country
    TW TW
    VS

    2 Object 2

    AOE ID 55633
    NORAD ID 55633
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FORMOSAT7-4/COSMIC2-4 STARLINK-5498
    Time of Closest Approach 2026-09-15T06:49:36+0000
    Collision Probability (Pc) 3.684971E-6
    Conjunction Distance (km) 1.671 km
    Relative Speed (km/s) 10.064 km/s
    Conjunction Risk Parameters R (Radial): -0.198 | I (In-track): 1.241 | C (Cross-track): 1.102
    Collision Risk Index (CRI) 0.46
    X Position (km) -1243.471 -1244.908
    Position Y (km) -6438.649 -6438.307
    Position Z (km) 2302.629 2303.41
    Velocity X (km/s) 7.324 2.25
    Velocity Y (km/s) -0.772 -2.825
    Velocity Z (km/s) 1.785 -6.659

    Orbital Parameters 国际轨道数据源

    Parameter FORMOSAT7-4/COSMIC2-4 STARLINK-5498
    Semimajor Axis (a) 6954.890 km 6950.230 km
    Eccentricity (e) 0.000139 0.000269
    Inclination (i) 23.9970° 69.9990°
    RAAN 220.9456° 92.2021°
    Perigee Argument 133.0625° 269.0004°
    Mean Anomaly (M) 226.9993° 91.0847°
    Apogee 577.722 km 573.967 km
    Perigee 575.784 km 570.219 km
    Orbit Epoch 2026-09-13T04:59:11+0000 2026-09-12T23:38:30+0000

    FORMOSAT7-4/COSMIC2-4 & STARLINK-5498 Collision Probability (Pc) Trend

    FORMOSAT7-4/COSMIC2-4 & STARLINK-5498 Collision Probability (Pc) TrendNot Available

    FORMOSAT7-4/COSMIC2-4 & STARLINK-5498 Miss Distance (Miss Distance) Trend

    FORMOSAT7-4/COSMIC2-4 & STARLINK-5498 Miss Distance (Miss Distance) TrendNot Available

    FORMOSAT7-4/COSMIC2-4Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5498Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FORMOSAT7-4/COSMIC2-4Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5498Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FORMOSAT7-4/COSMIC2-4

    No nearby objects data