Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.658945E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T05:19:39+0800
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    1 Object 1

    Name HIBARI
    AOE ID 49400
    NORAD ID 49400
    Object Type PAYLOAD
    Country
    JP JP
    VS

    2 Object 2

    AOE ID 53572
    NORAD ID 53572
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter HIBARI STARLINK-4555
    Time of Closest Approach 2026-09-03T19:30:44+0000
    Collision Probability (Pc) 1.658945E-6
    Conjunction Distance (km) 2.044 km
    Relative Speed (km/s) 6.707 km/s
    Conjunction Risk Parameters R (Radial): -1.839 | I (In-track): -0.796 | C (Cross-track): 0.397
    Collision Risk Index (CRI) 0.39
    X Position (km) 2612.822 2611.688
    Position Y (km) -5335.249 -5333.558
    Position Z (km) -3403.008 -3402.828
    Velocity X (km/s) 0.645 5.939
    Velocity Y (km/s) -3.863 -0.141
    Velocity Z (km/s) 6.549 4.788

    Orbital Parameters 国际轨道数据源

    Parameter HIBARI STARLINK-4555
    Semimajor Axis (a) 6844.554 km 6840.925 km
    Eccentricity (e) 0.000927 0.000233
    Inclination (i) 97.3169° 53.1614°
    RAAN 290.1974° 332.1566°
    Perigee Argument 287.4316° 37.9661°
    Mean Anomaly (M) 72.5913° 322.1506°
    Apogee 472.759 km 464.384 km
    Perigee 460.075 km 461.192 km
    Orbit Epoch 2026-09-02T02:54:59+0000 2026-09-01T12:57:53+0000

    HIBARI & STARLINK-4555 Collision Probability (Pc) Trend

    HIBARI & STARLINK-4555 Collision Probability (Pc) TrendNot Available

    HIBARI & STARLINK-4555 Miss Distance (Miss Distance) Trend

    HIBARI & STARLINK-4555 Miss Distance (Miss Distance) TrendNot Available

    HIBARIMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4555Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HIBARICollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4555Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HIBARI

    No nearby objects data