Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    3.656289E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T09:32:51+0800
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    1 Object 1

    AOE ID 53488
    NORAD ID 53488
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 55638
    NORAD ID 55638
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4421 STARLINK-5507
    Time of Closest Approach 2026-10-20T08:17:06+0000
    Collision Probability (Pc) 3.656289E-6
    Conjunction Distance (km) 1.581 km
    Relative Speed (km/s) 7.682 km/s
    Conjunction Risk Parameters R (Radial): 1.544 | I (In-track): 0.291 | C (Cross-track): -0.171
    Collision Risk Index (CRI) 0.46
    X Position (km) 2627.25 2627.563
    Position Y (km) 1994.039 1994.389
    Position Z (km) 5988.401 5989.91
    Velocity X (km/s) -3.929 -7.029
    Velocity Y (km/s) -5.501 1.462
    Velocity Z (km/s) 3.548 2.592

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4421 STARLINK-5507
    Semimajor Axis (a) 6843.671 km 6853.942 km
    Eccentricity (e) 0.000171 0.000296
    Inclination (i) 97.2813° 70.0005°
    RAAN 48.6174° 0.4710°
    Perigee Argument 83.7365° 281.0632°
    Mean Anomaly (M) 276.4073° 154.5699°
    Apogee 466.704 km 477.837 km
    Perigee 464.364 km 473.773 km
    Orbit Epoch 2026-10-18T07:27:58+0000 2026-10-18T14:00:02+0000

    STARLINK-4421 & STARLINK-5507 Collision Probability (Pc) Trend

    STARLINK-4421 & STARLINK-5507 Collision Probability (Pc) TrendNot Available

    STARLINK-4421 & STARLINK-5507 Miss Distance (Miss Distance) Trend

    STARLINK-4421 & STARLINK-5507 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4421Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5507Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4421Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5507Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4421

    No nearby objects data