Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    7.222026E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T12:01:39+0800
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    1 Object 1

    Name HST
    AOE ID 20580
    NORAD ID 20580
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 64856
    NORAD ID 64856
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter HST STARLINK-34578
    Time of Closest Approach 2026-09-04T04:59:51+0000
    Collision Probability (Pc) 7.222026E-6
    Conjunction Distance (km) 1.439 km
    Relative Speed (km/s) 13.493 km/s
    Conjunction Risk Parameters R (Radial): -1.033 | I (In-track): -0.474 | C (Cross-track): 0.882
    Collision Risk Index (CRI) 0.52
    X Position (km) 1093.747 1092.755
    Position Y (km) -6650.722 -6649.752
    Position Z (km) 1199.84 1200.223
    Velocity X (km/s) 6.628 -0.753
    Velocity Y (km/s) 1.704 -1.48
    Velocity Z (km/s) 3.386 -7.451

    Orbital Parameters 国际轨道数据源

    Parameter HST STARLINK-34578
    Semimajor Axis (a) 6849.347 km 6843.677 km
    Eccentricity (e) 0.000148 0.000192
    Inclination (i) 28.4725° 97.2849°
    RAAN 265.5388° 97.3530°
    Perigee Argument 291.5545° 97.8295°
    Mean Anomaly (M) 68.4894° 262.3167°
    Apogee 472.223 km 466.858 km
    Perigee 470.197 km 464.222 km
    Orbit Epoch 2026-09-03T10:08:14+0000 2026-09-03T12:35:56+0000

    HST & STARLINK-34578 Collision Probability (Pc) Trend

    HST & STARLINK-34578 Collision Probability (Pc) TrendNot Available

    HST & STARLINK-34578 Miss Distance (Miss Distance) Trend

    HST & STARLINK-34578 Miss Distance (Miss Distance) TrendNot Available

    HSTMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-34578Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HSTCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-34578Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HST

    No nearby objects data