Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.751916E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-11-01T01:59:38+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 53199
    NORAD ID 53199
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter HST STARLINK-4395
    Time of Closest Approach 2026-10-31T21:14:21+0000
    Collision Probability (Pc) 2.751916E-6
    Conjunction Distance (km) 1.966 km
    Relative Speed (km/s) 12.975 km/s
    Conjunction Risk Parameters R (Radial): 0.51 | I (In-track): -1.001 | C (Cross-track): -1.612
    Collision Risk Index (CRI) 0.44
    X Position (km) 6333.681 6334.53
    Position Y (km) -335.384 -336.892
    Position Z (km) 2568.261 2567.329
    Velocity X (km/s) 1.292 -2.899
    Velocity Y (km/s) 7.185 -0.891
    Velocity Z (km/s) -2.244 7.006

    Orbital Parameters 国际轨道数据源

    Parameter HST STARLINK-4395
    Semimajor Axis (a) 6847.600 km 6843.692 km
    Eccentricity (e) 0.000173 0.000120
    Inclination (i) 28.4731° 97.2857°
    RAAN 230.3766° 359.2122°
    Perigee Argument 220.9787° 99.1129°
    Mean Anomaly (M) 139.0679° 261.0249°
    Apogee 470.648 km 466.377 km
    Perigee 468.278 km 464.733 km
    Orbit Epoch 2026-10-31T03:29:15+0000 2026-10-31T03:54:56+0000

    HST & STARLINK-4395 Collision Probability (Pc) Trend

    HST & STARLINK-4395 Collision Probability (Pc) TrendNot Available

    HST & STARLINK-4395 Miss Distance (Miss Distance) Trend

    HST & STARLINK-4395 Miss Distance (Miss Distance) TrendNot Available

    HSTMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4395Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HSTCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4395Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HST

    No nearby objects data