Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    6.732619E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T09:46:27+0800
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    1 Object 1

    AOE ID 52630
    NORAD ID 52630
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 53156
    NORAD ID 53156
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3989 STARLINK-4087
    Time of Closest Approach 2026-09-05T03:59:43+0000
    Collision Probability (Pc) 6.732619E-6
    Conjunction Distance (km) 1.355 km
    Relative Speed (km/s) 9.071 km/s
    Conjunction Risk Parameters R (Radial): 1.004 | I (In-track): 0.733 | C (Cross-track): -0.538
    Collision Risk Index (CRI) 0.52
    X Position (km) 4281.016 4280.884
    Position Y (km) 2797.005 2795.833
    Position Z (km) -4563.568 -4562.903
    Velocity X (km/s) -5.877 -0.823
    Velocity Y (km/s) 3.478 6.78
    Velocity Z (km/s) -3.385 3.385

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3989 STARLINK-4087
    Semimajor Axis (a) 6848.869 km 6848.163 km
    Eccentricity (e) 0.000118 0.000194
    Inclination (i) 53.1588° 53.1614°
    RAAN 185.3399° 86.7876°
    Perigee Argument 86.2087° 88.6023°
    Mean Anomaly (M) 273.9049° 99.8784°
    Apogee 471.542 km 471.357 km
    Perigee 469.922 km 468.695 km
    Orbit Epoch 2026-09-02T02:55:55+0000 2026-09-02T16:00:02+0000

    STARLINK-3989 & STARLINK-4087 Collision Probability (Pc) Trend

    STARLINK-3989 & STARLINK-4087 Collision Probability (Pc) TrendNot Available

    STARLINK-3989 & STARLINK-4087 Miss Distance (Miss Distance) Trend

    STARLINK-3989 & STARLINK-4087 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3989Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4087Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3989Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4087Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3989

    No nearby objects data