Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.22827E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T14:27:11+0800
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    1 Object 1

    Name KOSEN-1
    AOE ID 49402
    NORAD ID 49402
    Object Type PAYLOAD
    Country
    JP JP
    VS

    2 Object 2

    AOE ID 57867
    NORAD ID 57867
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter KOSEN-1 STARLINK-30439
    Time of Closest Approach 2026-09-11T08:29:45+0000
    Collision Probability (Pc) 1.22827E-6
    Conjunction Distance (km) 2.424 km
    Relative Speed (km/s) 7.346 km/s
    Conjunction Risk Parameters R (Radial): -1.869 | I (In-track): 1.353 | C (Cross-track): -0.743
    Collision Risk Index (CRI) 0.37
    X Position (km) 2991.595 2991.47
    Position Y (km) -5832.401 -5830.94
    Position Z (km) -2037.095 -2035.166
    Velocity X (km/s) 0.121 5.856
    Velocity Y (km/s) -2.46 1.372
    Velocity Z (km/s) 7.212 4.684

    Orbital Parameters 国际轨道数据源

    Parameter KOSEN-1 STARLINK-30439
    Semimajor Axis (a) 6860.264 km 6861.214 km
    Eccentricity (e) 0.001154 0.000160
    Inclination (i) 97.3117° 43.0038°
    RAAN 294.1640° 324.7236°
    Perigee Argument 263.5573° 265.7972°
    Mean Anomaly (M) 96.4354° 94.2697°
    Apogee 490.041 km 484.175 km
    Perigee 474.213 km 481.979 km
    Orbit Epoch 2026-09-10T15:16:55+0000 2026-09-09T22:05:05+0000

    KOSEN-1 & STARLINK-30439 Collision Probability (Pc) Trend

    KOSEN-1 & STARLINK-30439 Collision Probability (Pc) TrendNot Available

    KOSEN-1 & STARLINK-30439 Miss Distance (Miss Distance) Trend

    KOSEN-1 & STARLINK-30439 Miss Distance (Miss Distance) TrendNot Available

    KOSEN-1Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-30439Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    KOSEN-1Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-30439Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with KOSEN-1

    No nearby objects data