Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    4.570451E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T16:11:32+0800
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    1 Object 1

    AOE ID 53256
    NORAD ID 53256
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 66988
    NORAD ID 66988
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-4147 YAOGAN-47
    Time of Closest Approach 2026-09-13T14:32:47+0000
    Collision Probability (Pc) 4.570451E-6
    Conjunction Distance (km) 1.619 km
    Relative Speed (km/s) 12.02 km/s
    Conjunction Risk Parameters R (Radial): 1.219 | I (In-track): 0.652 | C (Cross-track): 0.843
    Collision Risk Index (CRI) 0.48
    X Position (km) 3798.632 3800.175
    Position Y (km) -1616.016 -1615.935
    Position Z (km) -5501.898 -5502.379
    Velocity X (km/s) 2.795 4.817
    Velocity Y (km/s) 7.073 -3.845
    Velocity Z (km/s) -0.147 4.457

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4147 YAOGAN-47
    Semimajor Axis (a) 6874.601 km 6873.850 km
    Eccentricity (e) 0.000027 0.000212
    Inclination (i) 53.1606° 97.4952°
    RAAN 77.0318° 325.0331°
    Perigee Argument 27.7210° 281.7952°
    Mean Anomaly (M) 331.1756° 78.3047°
    Apogee 496.650 km 497.172 km
    Perigee 496.278 km 494.254 km
    Orbit Epoch 2026-09-11T22:00:02+0000 2026-09-11T18:38:28+0000

    STARLINK-4147 & YAOGAN-47 Collision Probability (Pc) Trend

    STARLINK-4147 & YAOGAN-47 Collision Probability (Pc) TrendNot Available

    STARLINK-4147 & YAOGAN-47 Miss Distance (Miss Distance) Trend

    STARLINK-4147 & YAOGAN-47 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4147Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    YAOGAN-47Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4147Collision Probability Trend

    Object 1 Probability TrendNot Available

    YAOGAN-47Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4147

    No nearby objects data