Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.437706E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T11:04:16+0800
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    1 Object 1

    AOE ID 56337
    NORAD ID 56337
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 68753
    NORAD ID 68753
    Object Type ROCKET BODY
    Country
    CIS CIS

    Conjunction Constraints

    Parameter STARLINK-5561 SL-4 R/B
    Time of Closest Approach 2026-09-12T15:19:45+0000
    Collision Probability (Pc) 2.437706E-6
    Conjunction Distance (km) 2.139 km
    Relative Speed (km/s) 14.922 km/s
    Conjunction Risk Parameters R (Radial): 0.658 | I (In-track): -0.379 | C (Cross-track): 2
    Collision Risk Index (CRI) 0.43
    X Position (km) -2315.77 -2317.364
    Position Y (km) -4612.387 -4611.026
    Position Z (km) 4592.307 4591.879
    Velocity X (km/s) 1.084 -3.52
    Velocity Y (km/s) 5.033 -3.751
    Velocity Z (km/s) 5.586 -5.562

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-5561 SL-4 R/B
    Semimajor Axis (a) 6912.746 km 6874.231 km
    Eccentricity (e) 0.000170 0.006112
    Inclination (i) 97.2846° 98.2839°
    RAAN 249.1090° 54.5365°
    Perigee Argument 91.9144° 293.3406°
    Mean Anomaly (M) 253.3780° 66.1405°
    Apogee 535.787 km 538.113 km
    Perigee 533.431 km 454.075 km
    Orbit Epoch 2026-09-11T20:00:01+0000 2026-09-11T10:20:39+0000

    STARLINK-5561 & SL-4 R/B Collision Probability (Pc) Trend

    STARLINK-5561 & SL-4 R/B Collision Probability (Pc) TrendNot Available

    STARLINK-5561 & SL-4 R/B Miss Distance (Miss Distance) Trend

    STARLINK-5561 & SL-4 R/B Miss Distance (Miss Distance) TrendNot Available

    STARLINK-5561Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SL-4 R/BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-5561Collision Probability Trend

    Object 1 Probability TrendNot Available

    SL-4 R/BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-5561

    No nearby objects data