Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    5.325029E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T20:51:12+0800
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    1 Object 1

    Name USA 55
    AOE ID 20547
    NORAD ID 20547
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 54792
    NORAD ID 54792
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 55 STARLINK-5431
    Time of Closest Approach 2026-10-19T15:44:43+0000
    Collision Probability (Pc) 5.325029E-5
    Conjunction Distance (km) 0.788 km
    Relative Speed (km/s) 12.48 km/s
    Conjunction Risk Parameters R (Radial): -0.38 | I (In-track): -0.385 | C (Cross-track): 0.571
    Collision Risk Index (CRI) 0.7
    X Position (km) 3710.978 3710.62
    Position Y (km) 2012.63 2013.013
    Position Z (km) -5389.425 -5390.012
    Velocity X (km/s) -4.82 -2.315
    Velocity Y (km/s) -3.617 7.182
    Velocity Z (km/s) -4.641 1.089

    Orbital Parameters 国际轨道数据源

    Parameter USA 55 STARLINK-5431
    Semimajor Axis (a) 6808.578 km 6840.919 km
    Eccentricity (e) 0.005452 0.000111
    Inclination (i) 94.1004° 53.1599°
    RAAN 213.4842° 105.8610°
    Perigee Argument 18.7536° 71.3509°
    Mean Anomaly (M) 341.5711° 288.7613°
    Apogee 467.561 km 463.539 km
    Perigee 393.321 km 462.025 km
    Orbit Epoch 2026-10-19T05:25:07+0000 2026-10-18T18:12:22+0000

    USA 55 & STARLINK-5431 Collision Probability (Pc) Trend

    USA 55 & STARLINK-5431 Collision Probability (Pc) TrendNot Available

    USA 55 & STARLINK-5431 Miss Distance (Miss Distance) Trend

    USA 55 & STARLINK-5431 Miss Distance (Miss Distance) TrendNot Available

    USA 55Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5431Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 55Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5431Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 55

    No nearby objects data