Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.46588E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-23T13:07:27+0800
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    1 Object 1

    AOE ID 53149
    NORAD ID 53149
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 53729
    NORAD ID 53729
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4021 STARLINK-4651
    Time of Closest Approach 2026-10-23T21:11:50+0000
    Collision Probability (Pc) 2.46588E-6
    Conjunction Distance (km) 1.876 km
    Relative Speed (km/s) 8.983 km/s
    Conjunction Risk Parameters R (Radial): 1.764 | I (In-track): -0.512 | C (Cross-track): 0.382
    Collision Risk Index (CRI) 0.43
    X Position (km) 4654.161 4653.217
    Position Y (km) -2001.676 -2000.574
    Position Z (km) 4586.867 4585.678
    Velocity X (km/s) 5.215 -0.332
    Velocity Y (km/s) 4.485 6.871
    Velocity Z (km/s) -3.325 3.326

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4021 STARLINK-4651
    Semimajor Axis (a) 6840.877 km 6839.570 km
    Eccentricity (e) 0.000161 0.000153
    Inclination (i) 53.1593° 53.1575°
    RAAN 203.8445° 300.4315°
    Perigee Argument 100.7490° 46.6329°
    Mean Anomaly (M) 259.3694° 313.4801°
    Apogee 463.842 km 462.483 km
    Perigee 461.638 km 460.383 km
    Orbit Epoch 2026-10-22T22:46:42+0000 2026-10-22T12:07:57+0000

    STARLINK-4021 & STARLINK-4651 Collision Probability (Pc) Trend

    STARLINK-4021 & STARLINK-4651 Collision Probability (Pc) TrendNot Available

    STARLINK-4021 & STARLINK-4651 Miss Distance (Miss Distance) Trend

    STARLINK-4021 & STARLINK-4651 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4021Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4651Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4021Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4651Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4021

    No nearby objects data