Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    8.900095E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T16:27:48+0800
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    1 Object 1

    AOE ID 55332
    NORAD ID 55332
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 64344
    NORAD ID 64344
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-5491 STARLINK-33977
    Time of Closest Approach 2026-09-04T15:56:36+0000
    Collision Probability (Pc) 8.900095E-7
    Conjunction Distance (km) 2.907 km
    Relative Speed (km/s) 6.702 km/s
    Conjunction Risk Parameters R (Radial): 2.898 | I (In-track): -0.2 | C (Cross-track): -0.097
    Collision Risk Index (CRI) 0.34
    X Position (km) 1202.963 1203.276
    Position Y (km) -4961.293 -4963.344
    Position Z (km) -4587.798 -4589.833
    Velocity X (km/s) 7.498 4.468
    Velocity Y (km/s) 0.871 -3.567
    Velocity Z (km/s) 1.025 5.03

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-5491 STARLINK-33977
    Semimajor Axis (a) 6861.198 km 6873.895 km
    Eccentricity (e) 0.000133 0.000287
    Inclination (i) 43.0053° 69.9993°
    RAAN 5.5618° 304.0425°
    Perigee Argument 270.1131° 262.0327°
    Mean Anomaly (M) 89.9568° 201.0190°
    Apogee 483.973 km 497.729 km
    Perigee 482.149 km 493.787 km
    Orbit Epoch 2026-09-03T08:54:03+0000 2026-09-04T04:00:02+0000

    STARLINK-5491 & STARLINK-33977 Collision Probability (Pc) Trend

    STARLINK-5491 & STARLINK-33977 Collision Probability (Pc) TrendNot Available

    STARLINK-5491 & STARLINK-33977 Miss Distance (Miss Distance) Trend

    STARLINK-5491 & STARLINK-33977 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-5491Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-33977Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-5491Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-33977Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-5491

    No nearby objects data