Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    7.441255E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-13T17:29:03+0800
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    1 Object 1

    AOE ID 51980
    NORAD ID 51980
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 58778
    NORAD ID 58778
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3649 STARLINK-31120
    Time of Closest Approach 2026-09-15T04:14:07+0000
    Collision Probability (Pc) 7.441255E-7
    Conjunction Distance (km) 2.994 km
    Relative Speed (km/s) 5.124 km/s
    Conjunction Risk Parameters R (Radial): -2.993 | I (In-track): -0.016 | C (Cross-track): 0.008
    Collision Risk Index (CRI) 0.32
    X Position (km) -3591.314 -3592.894
    Position Y (km) 2469.051 2470.115
    Position Z (km) -5276.325 -5278.634
    Velocity X (km/s) -2.442 -5.695
    Velocity Y (km/s) -7.038 -4.799
    Velocity Z (km/s) -1.632 1.632

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3649 STARLINK-31120
    Semimajor Axis (a) 6837.870 km 6840.863 km
    Eccentricity (e) 0.000128 0.000133
    Inclination (i) 53.1603° 53.1590°
    RAAN 270.2793° 224.0182°
    Perigee Argument 67.8176° 80.1684°
    Mean Anomaly (M) 292.2962° 279.9469°
    Apogee 460.605 km 463.635 km
    Perigee 458.861 km 461.817 km
    Orbit Epoch 2026-09-13T01:08:25+0000 2026-09-12T07:46:34+0000

    STARLINK-3649 & STARLINK-31120 Collision Probability (Pc) Trend

    STARLINK-3649 & STARLINK-31120 Collision Probability (Pc) TrendNot Available

    STARLINK-3649 & STARLINK-31120 Miss Distance (Miss Distance) Trend

    STARLINK-3649 & STARLINK-31120 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3649Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31120Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3649Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31120Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3649

    No nearby objects data