Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    2.449788E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T12:58:40+0800
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    1 Object 1

    AOE ID 53831
    NORAD ID 53831
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 53832
    NORAD ID 53832
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4649 STARLINK-4747
    Time of Closest Approach 2026-09-23T09:10:46+0000
    Collision Probability (Pc) 2.449788E-7
    Conjunction Distance (km) 2.69 km
    Relative Speed (km/s) 0.002 km/s
    Conjunction Risk Parameters R (Radial): 2.661 | I (In-track): 0.095 | C (Cross-track): -0.378
    Collision Risk Index (CRI) 0.23
    X Position (km) 5194.512 5192.732
    Position Y (km) -3165.355 -3164.017
    Position Z (km) -3137.366 -3135.857
    Velocity X (km/s) 0.476 0.477
    Velocity Y (km/s) 5.737 5.738
    Velocity Z (km/s) -5.009 -5.01

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4649 STARLINK-4747
    Semimajor Axis (a) 6840.872 km 6837.900 km
    Eccentricity (e) 0.000137 0.000118
    Inclination (i) 53.1612° 53.1593°
    RAAN 182.7283° 180.0391°
    Perigee Argument 93.5549° 79.9968°
    Mean Anomaly (M) 266.5611° 280.1168°
    Apogee 463.675 km 460.568 km
    Perigee 461.795 km 458.958 km
    Orbit Epoch 2026-09-11T05:28:54+0000 2026-09-11T19:43:47+0000

    STARLINK-4649 & STARLINK-4747 Collision Probability (Pc) Trend

    STARLINK-4649 & STARLINK-4747 Collision Probability (Pc) TrendNot Available

    STARLINK-4649 & STARLINK-4747 Miss Distance (Miss Distance) Trend

    STARLINK-4649 & STARLINK-4747 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4649Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4747Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4649Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4747Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4649

    No nearby objects data