Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.271205E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T03:30:50+0800
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    1 Object 1

    AOE ID 53003
    NORAD ID 53003
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 55632
    NORAD ID 55632
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4255 STARLINK-5546
    Time of Closest Approach 2026-10-20T19:47:35+0000
    Collision Probability (Pc) 1.271205E-6
    Conjunction Distance (km) 2.936 km
    Relative Speed (km/s) 12.901 km/s
    Conjunction Risk Parameters R (Radial): -1.37 | I (In-track): -1.402 | C (Cross-track): 2.185
    Collision Risk Index (CRI) 0.37
    X Position (km) -5860.766 -5858.696
    Position Y (km) 1686.155 1688.223
    Position Z (km) 3091.466 3091.231
    Velocity X (km/s) 1.045 -3.882
    Velocity Y (km/s) -5.643 -1.928
    Velocity Z (km/s) 5.041 -6.289

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4255 STARLINK-5546
    Semimajor Axis (a) 6840.875 km 6846.606 km
    Eccentricity (e) 0.000135 0.000301
    Inclination (i) 53.1569° 69.9995°
    RAAN 150.1680° 358.7600°
    Perigee Argument 93.2735° 267.2071°
    Mean Anomaly (M) 266.8422° 189.6823°
    Apogee 463.660 km 470.528 km
    Perigee 461.816 km 466.410 km
    Orbit Epoch 2026-10-18T23:52:21+0000 2026-10-19T06:00:01+0000

    STARLINK-4255 & STARLINK-5546 Collision Probability (Pc) Trend

    STARLINK-4255 & STARLINK-5546 Collision Probability (Pc) TrendNot Available

    STARLINK-4255 & STARLINK-5546 Miss Distance (Miss Distance) Trend

    STARLINK-4255 & STARLINK-5546 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4255Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5546Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4255Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5546Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4255

    No nearby objects data