Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.183262E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-29T14:54:35+0800
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    1 Object 1

    AOE ID 53391
    NORAD ID 53391
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 57004
    NORAD ID 57004
    Object Type UNKNOWN
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-4521 OBJECT A
    Time of Closest Approach 2026-10-29T13:04:26+0000
    Collision Probability (Pc) 1.183262E-6
    Conjunction Distance (km) 2.854 km
    Relative Speed (km/s) 10.689 km/s
    Conjunction Risk Parameters R (Radial): 0.493 | I (In-track): 2.007 | C (Cross-track): -1.969
    Collision Risk Index (CRI) 0.36
    X Position (km) -1856.373 -1855.986
    Position Y (km) -3786.979 -3789.593
    Position Z (km) 5386.666 5385.588
    Velocity X (km/s) 6.06 -4.036
    Velocity Y (km/s) -4.515 -4.564
    Velocity Z (km/s) -1.084 -4.595

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4521 OBJECT A
    Semimajor Axis (a) 6849.157 km 6843.801 km
    Eccentricity (e) 0.000132 0.000508
    Inclination (i) 53.1578° 97.5065°
    RAAN 141.7884° 53.2665°
    Perigee Argument 113.3804° 274.9801°
    Mean Anomaly (M) 246.7337° 85.0861°
    Apogee 471.927 km 469.141 km
    Perigee 470.113 km 462.187 km
    Orbit Epoch 2026-10-28T13:08:49+0000 2026-10-28T14:35:39+0000

    STARLINK-4521 & OBJECT A Collision Probability (Pc) Trend

    STARLINK-4521 & OBJECT A Collision Probability (Pc) TrendNot Available

    STARLINK-4521 & OBJECT A Miss Distance (Miss Distance) Trend

    STARLINK-4521 & OBJECT A Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4521Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    OBJECT AMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4521Collision Probability Trend

    Object 1 Probability TrendNot Available

    OBJECT ACollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4521

    No nearby objects data