Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.710617E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T01:09:36+0800
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    1 Object 1

    AOE ID 53404
    NORAD ID 53404
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 58663
    NORAD ID 58663
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-4509 TIANMU-1 22
    Time of Closest Approach 2026-09-14T03:02:50+0000
    Collision Probability (Pc) 3.710617E-6
    Conjunction Distance (km) 1.552 km
    Relative Speed (km/s) 7.219 km/s
    Conjunction Risk Parameters R (Radial): -1.549 | I (In-track): -0.065 | C (Cross-track): -0.042
    Collision Risk Index (CRI) 0.46
    X Position (km) 5524 5522.795
    Position Y (km) 828.475 828.275
    Position Z (km) 3954.06 3953.103
    Velocity X (km/s) -3.798 -4.136
    Velocity Y (km/s) 5.102 -1.848
    Velocity Z (km/s) 4.224 6.147

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4509 TIANMU-1 22
    Semimajor Axis (a) 6848.913 km 6847.575 km
    Eccentricity (e) 0.000123 0.000453
    Inclination (i) 53.1612° 97.4571°
    RAAN 349.5826° 11.0152°
    Perigee Argument 64.1577° 50.9798°
    Mean Anomaly (M) 295.9551° 309.1846°
    Apogee 471.616 km 472.538 km
    Perigee 469.936 km 466.338 km
    Orbit Epoch 2026-09-11T07:30:28+0000 2026-09-11T07:29:34+0000

    STARLINK-4509 & TIANMU-1 22 Collision Probability (Pc) Trend

    STARLINK-4509 & TIANMU-1 22 Collision Probability (Pc) TrendNot Available

    STARLINK-4509 & TIANMU-1 22 Miss Distance (Miss Distance) Trend

    STARLINK-4509 & TIANMU-1 22 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4509Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    TIANMU-1 22Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4509Collision Probability Trend

    Object 1 Probability TrendNot Available

    TIANMU-1 22Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4509

    No nearby objects data