Conjunction Event Detail

    ⚠
    High Risk
    High collision probability. Maneuver recommended for primary asset.
    3.06766E-4
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T15:01:55+0800
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    1 Object 1

    AOE ID 52855
    NORAD ID 52855
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    Name TROLL
    AOE ID 62658
    NORAD ID 62658
    Object Type PAYLOAD
    Country
    CZ CZ

    Conjunction Constraints

    Parameter STARLINK-4209 TROLL
    Time of Closest Approach 2026-10-22T10:38:58+0000
    Collision Probability (Pc) 3.06766E-4
    Conjunction Distance (km) 0.349 km
    Relative Speed (km/s) 8.215 km/s
    Conjunction Risk Parameters R (Radial): -0.147 | I (In-track): -0.267 | C (Cross-track): 0.168
    Collision Risk Index (CRI) 0.85
    X Position (km) 4589.166 4589.401
    Position Y (km) 2014.896 2015.127
    Position Z (km) -4675.255 -4675.142
    Velocity X (km/s) 0.209 5.222
    Velocity Y (km/s) 6.919 0.831
    Velocity Z (km/s) 3.19 5.488

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4209 TROLL
    Semimajor Axis (a) 6848.885 km 6847.607 km
    Eccentricity (e) 0.000109 0.000047
    Inclination (i) 53.1573° 97.3814°
    RAAN 80.7974° 13.7739°
    Perigee Argument 92.6398° 68.7834°
    Mean Anomaly (M) 267.4728° 291.3458°
    Apogee 471.494 km 469.792 km
    Perigee 470.002 km 469.148 km
    Orbit Epoch 2026-10-19T17:07:55+0000 2026-10-19T10:44:13+0000

    STARLINK-4209 & TROLL Collision Probability (Pc) Trend

    STARLINK-4209 & TROLL Collision Probability (Pc) TrendNot Available

    STARLINK-4209 & TROLL Miss Distance (Miss Distance) Trend

    STARLINK-4209 & TROLL Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4209Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    TROLLMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4209Collision Probability Trend

    Object 1 Probability TrendNot Available

    TROLLCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4209

    No nearby objects data