Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    4.161087E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T16:36:36+0800
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    1 Object 1

    AOE ID 53724
    NORAD ID 53724
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 58662
    NORAD ID 58662
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-4663 TIANMU-1 21
    Time of Closest Approach 2026-09-12T10:44:14+0000
    Collision Probability (Pc) 4.161087E-6
    Conjunction Distance (km) 1.677 km
    Relative Speed (km/s) 12.288 km/s
    Conjunction Risk Parameters R (Radial): -1.437 | I (In-track): -0.521 | C (Cross-track): -0.687
    Collision Risk Index (CRI) 0.47
    X Position (km) -3691.051 -3692.053
    Position Y (km) -1808.865 -1809.979
    Position Z (km) 5454.575 5455.327
    Velocity X (km/s) 3.794 -6.08
    Velocity Y (km/s) -6.622 -1.146
    Velocity Z (km/s) 0.371 -4.478

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4663 TIANMU-1 21
    Semimajor Axis (a) 6837.884 km 6834.670 km
    Eccentricity (e) 0.000116 0.000711
    Inclination (i) 53.1592° 97.4582°
    RAAN 133.5545° 14.5651°
    Perigee Argument 75.2591° 21.2224°
    Mean Anomaly (M) 284.8541° 338.9314°
    Apogee 460.543 km 461.393 km
    Perigee 458.951 km 451.673 km
    Orbit Epoch 2026-09-09T22:59:51+0000 2026-09-10T22:14:27+0000

    STARLINK-4663 & TIANMU-1 21 Collision Probability (Pc) Trend

    STARLINK-4663 & TIANMU-1 21 Collision Probability (Pc) TrendNot Available

    STARLINK-4663 & TIANMU-1 21 Miss Distance (Miss Distance) Trend

    STARLINK-4663 & TIANMU-1 21 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4663Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    TIANMU-1 21Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4663Collision Probability Trend

    Object 1 Probability TrendNot Available

    TIANMU-1 21Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4663

    No nearby objects data