Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.930037E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T19:45:45+0800
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    1 Object 1

    Name TISAT 1
    AOE ID 36799
    NORAD ID 36799
    Object Type PAYLOAD
    Country
    CH CH
    ← VS →

    2 Object 2

    AOE ID 52452
    NORAD ID 52452
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter TISAT 1 STARLINK-3909
    Time of Closest Approach 2026-10-21T19:16:48+0000
    Collision Probability (Pc) 1.930037E-6
    Conjunction Distance (km) 2.317 km
    Relative Speed (km/s) 13.579 km/s
    Conjunction Risk Parameters R (Radial): 1.368 | I (In-track): 0.849 | C (Cross-track): -1.665
    Collision Risk Index (CRI) 0.41
    X Position (km) -1977.458 -1976.161
    Position Y (km) -3984.961 -3985.593
    Position Z (km) 5181.336 5183.148
    Velocity X (km/s) 1.042 5.3
    Velocity Y (km/s) 5.81 -5.152
    Velocity Z (km/s) 4.851 -1.936

    Orbital Parameters 国际轨道数据源

    Parameter TISAT 1 STARLINK-3909
    Semimajor Axis (a) 6834.930 km 6837.872 km
    Eccentricity (e) 0.000387 0.000118
    Inclination (i) 98.0839° 53.1596°
    RAAN 250.9815° 133.7336°
    Perigee Argument 122.0726° 86.4874°
    Mean Anomaly (M) 238.0891° 273.6264°
    Apogee 459.437 km 460.542 km
    Perigee 454.149 km 458.928 km
    Orbit Epoch 2026-10-19T20:10:18+0000 2026-10-19T19:56:35+0000

    TISAT 1 & STARLINK-3909 Collision Probability (Pc) Trend

    TISAT 1 & STARLINK-3909 Collision Probability (Pc) TrendNot Available

    TISAT 1 & STARLINK-3909 Miss Distance (Miss Distance) Trend

    TISAT 1 & STARLINK-3909 Miss Distance (Miss Distance) TrendNot Available

    TISAT 1Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-3909Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    TISAT 1Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-3909Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with TISAT 1

    No nearby objects data