Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    7.270553E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T12:37:46+0800
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    1 Object 1

    AOE ID 49027
    NORAD ID 49027
    Object Type PAYLOAD
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 53842
    NORAD ID 53842
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter TIANQI-15 STARLINK-4754
    Time of Closest Approach 2026-09-13T22:05:17+0000
    Collision Probability (Pc) 7.270553E-6
    Conjunction Distance (km) 1.35 km
    Relative Speed (km/s) 9.98 km/s
    Conjunction Risk Parameters R (Radial): 0.842 | I (In-track): -0.792 | C (Cross-track): 0.698
    Collision Risk Index (CRI) 0.52
    X Position (km) 6604.811 6605.703
    Position Y (km) 204.408 203.396
    Position Z (km) -2035.637 -2035.704
    Velocity X (km/s) 0.945 -1.881
    Velocity Y (km/s) 6.54 4.706
    Velocity Z (km/s) 3.74 -5.653

    Orbital Parameters 国际轨道数据源

    Parameter TIANQI-15 STARLINK-4754
    Semimajor Axis (a) 6910.632 km 6911.496 km
    Eccentricity (e) 0.000519 0.000205
    Inclination (i) 34.9989° 53.1595°
    RAAN 41.3226° 177.4502°
    Perigee Argument 96.7281° 58.1212°
    Mean Anomaly (M) 263.4020° 38.6545°
    Apogee 536.080 km 534.777 km
    Perigee 528.910 km 531.941 km
    Orbit Epoch 2026-09-11T17:54:07+0000 2026-09-11T22:00:02+0000

    TIANQI-15 & STARLINK-4754 Collision Probability (Pc) Trend

    TIANQI-15 & STARLINK-4754 Collision Probability (Pc) TrendNot Available

    TIANQI-15 & STARLINK-4754 Miss Distance (Miss Distance) Trend

    TIANQI-15 & STARLINK-4754 Miss Distance (Miss Distance) TrendNot Available

    TIANQI-15Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4754Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    TIANQI-15Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4754Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with TIANQI-15

    No nearby objects data