Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.871581E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T16:36:33+0800
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    1 Object 1

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

    2 Object 2

    AOE ID 66940
    NORAD ID 66940
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter TIANMU-1 21 STARLINK-36121
    Time of Closest Approach 2026-09-13T07:20:01+0000
    Collision Probability (Pc) 3.871581E-6
    Conjunction Distance (km) 1.789 km
    Relative Speed (km/s) 14.747 km/s
    Conjunction Risk Parameters R (Radial): -1.615 | I (In-track): -0.182 | C (Cross-track): -0.745
    Collision Risk Index (CRI) 0.47
    X Position (km) -6487.785 -6486.494
    Position Y (km) -1815.755 -1814.651
    Position Z (km) -1203.556 -1202.997
    Velocity X (km/s) 1.003 0.232
    Velocity Y (km/s) 1.325 -4.762
    Velocity Z (km/s) -7.447 5.963

    Orbital Parameters 国际轨道数据源

    Parameter TIANMU-1 21 STARLINK-36121
    Semimajor Axis (a) 6834.670 km 6840.751 km
    Eccentricity (e) 0.000711 0.000034
    Inclination (i) 97.4582° 53.1573°
    RAAN 14.5651° 221.8973°
    Perigee Argument 21.2224° 41.7440°
    Mean Anomaly (M) 338.9314° 318.3588°
    Apogee 461.393 km 462.844 km
    Perigee 451.673 km 462.384 km
    Orbit Epoch 2026-09-10T22:14:27+0000 2026-09-09T08:02:21+0000

    TIANMU-1 21 & STARLINK-36121 Collision Probability (Pc) Trend

    TIANMU-1 21 & STARLINK-36121 Collision Probability (Pc) TrendNot Available

    TIANMU-1 21 & STARLINK-36121 Miss Distance (Miss Distance) Trend

    TIANMU-1 21 & STARLINK-36121 Miss Distance (Miss Distance) TrendNot Available

    TIANMU-1 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-36121Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    TIANMU-1 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-36121Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with TIANMU-1 21

    No nearby objects data