Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    2.625986E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T08:00:15+0800
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    1 Object 1

    AOE ID 52485
    NORAD ID 52485
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 53546
    NORAD ID 53546
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3913 STARLINK-4477
    Time of Closest Approach 2026-09-07T08:14:02+0000
    Collision Probability (Pc) 2.625986E-7
    Conjunction Distance (km) 2.583 km
    Relative Speed (km/s) 0.035 km/s
    Conjunction Risk Parameters R (Radial): -2.482 | I (In-track): -0.708 | C (Cross-track): -0.073
    Collision Risk Index (CRI) 0.23
    X Position (km) 3345.658 3344.899
    Position Y (km) 2370.198 2368.792
    Position Z (km) 5469.091 5467.061
    Velocity X (km/s) -4.407 -4.385
    Velocity Y (km/s) 6.238 6.255
    Velocity Z (km/s) -0.007 -0.027

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3913 STARLINK-4477
    Semimajor Axis (a) 6843.385 km 6840.879 km
    Eccentricity (e) 0.000125 0.000126
    Inclination (i) 53.1607° 53.1608°
    RAAN 318.0644° 319.5803°
    Perigee Argument 78.3647° 88.8126°
    Mean Anomaly (M) 281.7496° 271.3021°
    Apogee 466.106 km 463.605 km
    Perigee 464.390 km 461.879 km
    Orbit Epoch 2026-09-04T14:09:01+0000 2026-09-04T04:48:22+0000

    STARLINK-3913 & STARLINK-4477 Collision Probability (Pc) Trend

    STARLINK-3913 & STARLINK-4477 Collision Probability (Pc) TrendNot Available

    STARLINK-3913 & STARLINK-4477 Miss Distance (Miss Distance) Trend

    STARLINK-3913 & STARLINK-4477 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3913Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4477Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3913Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4477Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3913

    No nearby objects data