Conjunction Event Detail

    High Risk
    High collision probability. Maneuver recommended for primary asset.
    1.427865E-4
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-10T23:28:55+0800
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    1 Object 1

    AOE ID 48865
    NORAD ID 48865
    Object Type PAYLOAD
    Country
    CIS CIS
    VS

    2 Object 2

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

    Conjunction Constraints

    Parameter COSMOS 2550 TIANMU-1 21
    Time of Closest Approach 2026-09-10T18:25:35+0000
    Collision Probability (Pc) 1.427865E-4
    Conjunction Distance (km) 0.584 km
    Relative Speed (km/s) 15.099 km/s
    Conjunction Risk Parameters R (Radial): -0.003 | I (In-track): -0.074 | C (Cross-track): -0.578
    Collision Risk Index (CRI) 0.78
    X Position (km) -6240.054 -6239.889
    Position Y (km) -1261.924 -1262.464
    Position Z (km) -2514.617 -2514.762
    Velocity X (km/s) -1.867 2.504
    Velocity Y (km/s) -3.628 1.592
    Velocity Z (km/s) 6.45 -7.027

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2550 TIANMU-1 21
    Semimajor Axis (a) 6842.507 km 6834.698 km
    Eccentricity (e) 0.000834 0.000717
    Inclination (i) 67.1423° 97.4580°
    RAAN 203.5743° 13.9049°
    Perigee Argument 268.3470° 23.4748°
    Mean Anomaly (M) 91.6729° 336.6822°
    Apogee 470.081 km 461.463 km
    Perigee 458.659 km 451.659 km
    Orbit Epoch 2026-09-09T22:11:03+0000 2026-09-10T06:36:38+0000

    COSMOS 2550 & TIANMU-1 21 Collision Probability (Pc) Trend

    COSMOS 2550 & TIANMU-1 21 Collision Probability (Pc) TrendNot Available

    COSMOS 2550 & TIANMU-1 21 Miss Distance (Miss Distance) Trend

    COSMOS 2550 & TIANMU-1 21 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2550Miss 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

    COSMOS 2550Collision Probability Trend

    Object 1 Probability TrendNot Available

    TIANMU-1 21Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2550

    No nearby objects data