Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    9.735431E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T15:39:25+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 47845
    NORAD ID 47845
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter HST STARLINK-2453
    Time of Closest Approach 2026-09-06T17:21:43+0000
    Collision Probability (Pc) 9.735431E-7
    Conjunction Distance (km) 2.969 km
    Relative Speed (km/s) 8.242 km/s
    Conjunction Risk Parameters R (Radial): -2.75 | I (In-track): -0.937 | C (Cross-track): 0.606
    Collision Risk Index (CRI) 0.35
    X Position (km) -2843.38 -2845.535
    Position Y (km) 5592.234 5594.105
    Position Z (km) -2750.456 -2751.274
    Velocity X (km/s) -6.139 -5.497
    Velocity Y (km/s) -4.085 -0.204
    Velocity Z (km/s) -1.959 5.283

    Orbital Parameters 国际轨道数据源

    Parameter HST STARLINK-2453
    Semimajor Axis (a) 6849.347 km 6848.863 km
    Eccentricity (e) 0.000148 0.000134
    Inclination (i) 28.4725° 53.1595°
    RAAN 265.5388° 150.1005°
    Perigee Argument 291.5545° 84.5269°
    Mean Anomaly (M) 68.4894° 275.5885°
    Apogee 472.223 km 471.644 km
    Perigee 470.197 km 469.808 km
    Orbit Epoch 2026-09-03T10:08:14+0000 2026-09-03T17:27:25+0000

    HST & STARLINK-2453 Collision Probability (Pc) Trend

    HST & STARLINK-2453 Collision Probability (Pc) TrendNot Available

    HST & STARLINK-2453 Miss Distance (Miss Distance) Trend

    HST & STARLINK-2453 Miss Distance (Miss Distance) TrendNot Available

    HSTMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-2453Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HSTCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-2453Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HST

    No nearby objects data