Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    9.788822E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T09:52:16+0800
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    1 Object 1

    AOE ID 48436
    NORAD ID 48436
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 53654
    NORAD ID 53654
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-2639 STARLINK-4420
    Time of Closest Approach 2026-09-03T07:50:24+0000
    Collision Probability (Pc) 9.788822E-7
    Conjunction Distance (km) 2.958 km
    Relative Speed (km/s) 8.259 km/s
    Conjunction Risk Parameters R (Radial): 2.888 | I (In-track): -0.54 | C (Cross-track): 0.342
    Collision Risk Index (CRI) 0.35
    X Position (km) -2213.743 -2212.845
    Position Y (km) 4463.073 4460.718
    Position Z (km) 4690.224 4688.676
    Velocity X (km/s) -4.313 3.485
    Velocity Y (km/s) -5.457 -4.033
    Velocity Z (km/s) 3.148 5.466

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-2639 STARLINK-4420
    Semimajor Axis (a) 6848.856 km 6843.696 km
    Eccentricity (e) 0.000120 0.000160
    Inclination (i) 53.1600° 97.2848°
    RAAN 78.5253° 122.5878°
    Perigee Argument 74.8884° 97.3846°
    Mean Anomaly (M) 285.2250° 262.7578°
    Apogee 471.538 km 466.654 km
    Perigee 469.900 km 464.464 km
    Orbit Epoch 2026-09-01T19:33:58+0000 2026-09-02T14:25:22+0000

    STARLINK-2639 & STARLINK-4420 Collision Probability (Pc) Trend

    STARLINK-2639 & STARLINK-4420 Collision Probability (Pc) TrendNot Available

    STARLINK-2639 & STARLINK-4420 Miss Distance (Miss Distance) Trend

    STARLINK-2639 & STARLINK-4420 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-2639Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4420Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-2639Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4420Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-2639

    No nearby objects data