Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    2.108828E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T03:15:52+0800
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    1 Object 1

    Name USA 121
    AOE ID 23908
    NORAD ID 23908
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 57126
    NORAD ID 57126
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 121 STARLINK-6167
    Time of Closest Approach 2026-10-20T21:07:39+0000
    Collision Probability (Pc) 2.108828E-5
    Conjunction Distance (km) 1.021 km
    Relative Speed (km/s) 11.445 km/s
    Conjunction Risk Parameters R (Radial): 1.011 | I (In-track): 0.109 | C (Cross-track): -0.091
    Collision Risk Index (CRI) 0.61
    X Position (km) -3308.423 -3308.786
    Position Y (km) -5143.772 -5144.585
    Position Z (km) 3099.704 3100.204
    Velocity X (km/s) 5.143 4.189
    Velocity Y (km/s) 0.622 -5.047
    Velocity Z (km/s) 6.003 -3.893

    Orbital Parameters 国际轨道数据源

    Parameter USA 121 STARLINK-6167
    Semimajor Axis (a) 7462.948 km 6861.201 km
    Eccentricity (e) 0.085759 0.000162
    Inclination (i) 63.3167° 43.0008°
    RAAN 224.2496° 92.5594°
    Perigee Argument 51.4539° 259.5179°
    Mean Anomaly (M) 316.0232° 100.5491°
    Apogee 1724.823 km 484.173 km
    Perigee 444.799 km 481.955 km
    Orbit Epoch 2026-10-20T04:57:25+0000 2026-10-20T11:06:33+0000

    USA 121 & STARLINK-6167 Collision Probability (Pc) Trend

    USA 121 & STARLINK-6167 Collision Probability (Pc) TrendNot Available

    USA 121 & STARLINK-6167 Miss Distance (Miss Distance) Trend

    USA 121 & STARLINK-6167 Miss Distance (Miss Distance) TrendNot Available

    USA 121Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-6167Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 121Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-6167Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 121

    No nearby objects data