Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.31749E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-18T19:24:26+0800
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    1 Object 1

    AOE ID 47399
    NORAD ID 47399
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 64862
    NORAD ID 64862
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-2121 STARLINK-34684
    Time of Closest Approach 2026-10-19T04:30:44+0000
    Collision Probability (Pc) 1.31749E-6
    Conjunction Distance (km) 2.523 km
    Relative Speed (km/s) 9.338 km/s
    Conjunction Risk Parameters R (Radial): -2.425 | I (In-track): -0.545 | C (Cross-track): 0.427
    Collision Risk Index (CRI) 0.37
    X Position (km) 3166.157 3165.136
    Position Y (km) -3270.768 -3270.158
    Position Z (km) -5123.796 -5121.571
    Velocity X (km/s) 3.243 -4.933
    Velocity Y (km/s) 6.544 3.005
    Velocity Z (km/s) -2.175 -4.971

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-2121 STARLINK-34684
    Semimajor Axis (a) 6848.740 km 6843.655 km
    Eccentricity (e) 0.000074 0.000179
    Inclination (i) 53.1598° 97.2848°
    RAAN 82.8070° 141.2078°
    Perigee Argument 74.1381° 86.7024°
    Mean Anomaly (M) 285.9702° 273.4424°
    Apogee 471.110 km 466.744 km
    Perigee 470.096 km 464.292 km
    Orbit Epoch 2026-10-17T20:06:37+0000 2026-10-18T00:53:39+0000

    STARLINK-2121 & STARLINK-34684 Collision Probability (Pc) Trend

    STARLINK-2121 & STARLINK-34684 Collision Probability (Pc) TrendNot Available

    STARLINK-2121 & STARLINK-34684 Miss Distance (Miss Distance) Trend

    STARLINK-2121 & STARLINK-34684 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-2121Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-34684Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-2121Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-34684Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-2121

    No nearby objects data