Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.511354E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T08:35:52+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 64461
    NORAD ID 64461
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 55 STARLINK-34418
    Time of Closest Approach 2026-09-03T11:51:41+0000
    Collision Probability (Pc) 1.511354E-6
    Conjunction Distance (km) 2.702 km
    Relative Speed (km/s) 14.284 km/s
    Conjunction Risk Parameters R (Radial): 1.791 | I (In-track): 0.709 | C (Cross-track): -1.895
    Collision Risk Index (CRI) 0.39
    X Position (km) -5632.377 -5633.99
    Position Y (km) -1024.955 -1027.107
    Position Z (km) -3748.867 -3749.122
    Velocity X (km/s) -4.225 3.845
    Velocity Y (km/s) -0.108 -4.856
    Velocity Z (km/s) 6.333 -4.454

    Orbital Parameters 国际轨道数据源

    Parameter USA 55 STARLINK-34418
    Semimajor Axis (a) 6809.906 km 6840.825 km
    Eccentricity (e) 0.005359 0.000051
    Inclination (i) 94.0951° 53.1615°
    RAAN 187.1157° 349.9616°
    Perigee Argument 192.5967° 71.4957°
    Mean Anomaly (M) 167.3954° 288.6101°
    Apogee 468.264 km 463.037 km
    Perigee 395.274 km 462.339 km
    Orbit Epoch 2026-09-02T14:14:32+0000 2026-09-01T13:33:37+0000

    USA 55 & STARLINK-34418 Collision Probability (Pc) Trend

    USA 55 & STARLINK-34418 Collision Probability (Pc) TrendNot Available

    USA 55 & STARLINK-34418 Miss Distance (Miss Distance) Trend

    USA 55 & STARLINK-34418 Miss Distance (Miss Distance) TrendNot Available

    USA 55Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-34418Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 55Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-34418Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 55

    No nearby objects data