Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.768167E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T06:21:45+0800
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    1 Object 1

    AOE ID 52699
    NORAD ID 52699
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 60746
    NORAD ID 60746
    Object Type UNKNOWN
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-3987 OBJECT B
    Time of Closest Approach 2026-10-21T00:08:37+0000
    Collision Probability (Pc) 2.768167E-6
    Conjunction Distance (km) 1.941 km
    Relative Speed (km/s) 12.418 km/s
    Conjunction Risk Parameters R (Radial): 0.557 | I (In-track): 1.073 | C (Cross-track): 1.518
    Collision Risk Index (CRI) 0.44
    X Position (km) 73.292 72.086
    Position Y (km) 4131.309 4132.776
    Position Z (km) -5459.055 -5458.659
    Velocity X (km/s) -7.589 1.793
    Velocity Y (km/s) -0.531 5.889
    Velocity Z (km/s) -0.504 4.492

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3987 OBJECT B
    Semimajor Axis (a) 6840.857 km 6835.543 km
    Eccentricity (e) 0.000118 0.001028
    Inclination (i) 53.1577° 97.6936°
    RAAN 191.0346° 78.1821°
    Perigee Argument 89.9547° 78.3282°
    Mean Anomaly (M) 270.1591° 281.9114°
    Apogee 463.525 km 464.437 km
    Perigee 461.915 km 450.375 km
    Orbit Epoch 2026-10-20T02:40:13+0000 2026-10-20T11:52:13+0000

    STARLINK-3987 & OBJECT B Collision Probability (Pc) Trend

    STARLINK-3987 & OBJECT B Collision Probability (Pc) TrendNot Available

    STARLINK-3987 & OBJECT B Miss Distance (Miss Distance) Trend

    STARLINK-3987 & OBJECT B Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3987Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    OBJECT BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3987Collision Probability Trend

    Object 1 Probability TrendNot Available

    OBJECT BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3987

    No nearby objects data