Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.031321E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-11-01T17:29:54+0800
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    1 Object 1

    AOE ID 51987
    NORAD ID 51987
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 55631
    NORAD ID 55631
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3644 STARLINK-5558
    Time of Closest Approach 2026-11-02T21:01:54+0000
    Collision Probability (Pc) 1.031321E-6
    Conjunction Distance (km) 2.724 km
    Relative Speed (km/s) 7.502 km/s
    Conjunction Risk Parameters R (Radial): 2.397 | I (In-track): -1.124 | C (Cross-track): -0.64
    Collision Risk Index (CRI) 0.35
    X Position (km) 1429.576 1428.829
    Position Y (km) -3858.818 -3860.147
    Position Z (km) -5472.168 -5474.424
    Velocity X (km/s) 7 5.808
    Velocity Y (km/s) 3.005 -3.191
    Velocity Z (km/s) -0.29 3.766

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3644 STARLINK-5558
    Semimajor Axis (a) 6840.867 km 6833.100 km
    Eccentricity (e) 0.000163 0.000317
    Inclination (i) 53.1623° 70.0012°
    RAAN 35.7513° 324.0647°
    Perigee Argument 79.9479° 272.8058°
    Mean Anomaly (M) 280.1707° 203.5990°
    Apogee 463.845 km 457.132 km
    Perigee 461.615 km 452.794 km
    Orbit Epoch 2026-10-31T13:09:27+0000 2026-11-01T02:00:02+0000

    STARLINK-3644 & STARLINK-5558 Collision Probability (Pc) Trend

    STARLINK-3644 & STARLINK-5558 Collision Probability (Pc) TrendNot Available

    STARLINK-3644 & STARLINK-5558 Miss Distance (Miss Distance) Trend

    STARLINK-3644 & STARLINK-5558 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3644Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5558Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3644Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5558Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3644

    No nearby objects data