Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.328715E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T18:24:23+0800
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    1 Object 1

    AOE ID 52994
    NORAD ID 52994
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 66120
    NORAD ID 66120
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4256 STARLINK-35553
    Time of Closest Approach 2026-10-21T03:02:32+0000
    Collision Probability (Pc) 1.328715E-6
    Conjunction Distance (km) 2.31 km
    Relative Speed (km/s) 7.19 km/s
    Conjunction Risk Parameters R (Radial): 0.139 | I (In-track): 2.031 | C (Cross-track): 1.092
    Collision Risk Index (CRI) 0.37
    X Position (km) -4503.26 -4503.739
    Position Y (km) -1138.784 -1136.528
    Position Z (km) 5012.417 5012.31
    Velocity X (km/s) 4.212 -0.909
    Velocity Y (km/s) -5.888 -7.182
    Velocity Z (km/s) 2.439 -2.439

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4256 STARLINK-35553
    Semimajor Axis (a) 6840.870 km 6840.847 km
    Eccentricity (e) 0.000129 0.000088
    Inclination (i) 53.1591° 53.1557°
    RAAN 149.9921° 79.2372°
    Perigee Argument 89.1301° 83.3688°
    Mean Anomaly (M) 270.9849° 276.7415°
    Apogee 463.613 km 463.311 km
    Perigee 461.853 km 462.109 km
    Orbit Epoch 2026-10-19T00:43:47+0000 2026-10-18T18:16:30+0000

    STARLINK-4256 & STARLINK-35553 Collision Probability (Pc) Trend

    STARLINK-4256 & STARLINK-35553 Collision Probability (Pc) TrendNot Available

    STARLINK-4256 & STARLINK-35553 Miss Distance (Miss Distance) Trend

    STARLINK-4256 & STARLINK-35553 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4256Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-35553Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4256Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-35553Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4256

    No nearby objects data