Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    4.778623E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T08:35:53+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 48589
    NORAD ID 48589
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 55 STARLINK-2245
    Time of Closest Approach 2026-09-04T06:42:38+0000
    Collision Probability (Pc) 4.778623E-6
    Conjunction Distance (km) 1.664 km
    Relative Speed (km/s) 14.599 km/s
    Conjunction Risk Parameters R (Radial): 0.175 | I (In-track): -0.479 | C (Cross-track): 1.583
    Collision Risk Index (CRI) 0.49
    X Position (km) -6666.527 -6667.005
    Position Y (km) -849.86 -848.364
    Position Z (km) 1314.702 1314.153
    Velocity X (km/s) 1.389 -0.57
    Velocity Y (km/s) 0.735 -4.771
    Velocity Z (km/s) 7.447 -5.93

    Orbital Parameters 国际轨道数据源

    Parameter USA 55 STARLINK-2245
    Semimajor Axis (a) 6809.906 km 6848.866 km
    Eccentricity (e) 0.005359 0.000118
    Inclination (i) 94.0951° 53.1617°
    RAAN 187.1157° 27.0636°
    Perigee Argument 192.5967° 81.5600°
    Mean Anomaly (M) 167.3954° 278.5535°
    Apogee 468.264 km 471.540 km
    Perigee 395.274 km 469.918 km
    Orbit Epoch 2026-09-02T14:14:32+0000 2026-09-01T20:02:48+0000

    USA 55 & STARLINK-2245 Collision Probability (Pc) Trend

    USA 55 & STARLINK-2245 Collision Probability (Pc) TrendNot Available

    USA 55 & STARLINK-2245 Miss Distance (Miss Distance) Trend

    USA 55 & STARLINK-2245 Miss Distance (Miss Distance) TrendNot Available

    USA 55Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-2245Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 55Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-2245Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 55

    No nearby objects data