Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    7.940256E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T07:54:15+0800
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    1 Object 1

    AOE ID 49739
    NORAD ID 49739
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    Name TSAT-1A
    AOE ID 59442
    NORAD ID 59442
    Object Type PAYLOAD
    Country
    IN IN

    Conjunction Constraints

    Parameter STARLINK-3155 TSAT-1A
    Time of Closest Approach 2026-09-13T04:58:45+0000
    Collision Probability (Pc) 7.940256E-7
    Conjunction Distance (km) 2.281 km
    Relative Speed (km/s) 2.728 km/s
    Conjunction Risk Parameters R (Radial): -2.212 | I (In-track): -0.544 | C (Cross-track): -0.095
    Collision Risk Index (CRI) 0.33
    X Position (km) -1513.329 -1513.369
    Position Y (km) -4663.18 -4661.659
    Position Z (km) -4764.492 -4762.792
    Velocity X (km/s) 6.97 7.448
    Velocity Y (km/s) 0.804 -1.191
    Velocity Z (km/s) -3.001 -1.202

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3155 TSAT-1A
    Semimajor Axis (a) 6831.721 km 6838.729 km
    Eccentricity (e) 0.000187 0.001200
    Inclination (i) 53.1602° 45.6163°
    RAAN 33.0911° 8.6733°
    Perigee Argument 347.3658° 248.7328°
    Mean Anomaly (M) 12.7299° 111.2287°
    Apogee 454.859 km 468.799 km
    Perigee 452.309 km 452.385 km
    Orbit Epoch 2026-09-11T12:56:09+0000 2026-09-11T14:22:48+0000

    STARLINK-3155 & TSAT-1A Collision Probability (Pc) Trend

    STARLINK-3155 & TSAT-1A Collision Probability (Pc) TrendNot Available

    STARLINK-3155 & TSAT-1A Miss Distance (Miss Distance) Trend

    STARLINK-3155 & TSAT-1A Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3155Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    TSAT-1AMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3155Collision Probability Trend

    Object 1 Probability TrendNot Available

    TSAT-1ACollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3155

    No nearby objects data