Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.191929E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T09:51:20+0800
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    1 Object 1

    AOE ID 51139
    NORAD ID 51139
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 53558
    NORAD ID 53558
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3172 STARLINK-4494
    Time of Closest Approach 2026-09-05T07:12:40+0000
    Collision Probability (Pc) 1.191929E-6
    Conjunction Distance (km) 2.851 km
    Relative Speed (km/s) 10.798 km/s
    Conjunction Risk Parameters R (Radial): 2.694 | I (In-track): -0.66 | C (Cross-track): 0.663
    Collision Risk Index (CRI) 0.37
    X Position (km) 5751.794 5749.645
    Position Y (km) -715.95 -714.741
    Position Z (km) 3629.687 3628.256
    Velocity X (km/s) 3.517 -2.184
    Velocity Y (km/s) 5.007 5.717
    Velocity Z (km/s) -4.571 4.572

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3172 STARLINK-4494
    Semimajor Axis (a) 6843.374 km 6840.878 km
    Eccentricity (e) 0.000144 0.000122
    Inclination (i) 53.1598° 53.1585°
    RAAN 215.3274° 337.6173°
    Perigee Argument 69.7087° 75.8842°
    Mean Anomaly (M) 290.4070° 68.3584°
    Apogee 466.221 km 463.576 km
    Perigee 464.253 km 461.906 km
    Orbit Epoch 2026-09-02T05:05:50+0000 2026-09-02T14:00:02+0000

    STARLINK-3172 & STARLINK-4494 Collision Probability (Pc) Trend

    STARLINK-3172 & STARLINK-4494 Collision Probability (Pc) TrendNot Available

    STARLINK-3172 & STARLINK-4494 Miss Distance (Miss Distance) Trend

    STARLINK-3172 & STARLINK-4494 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3172Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4494Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3172Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4494Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3172

    No nearby objects data