Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.970983E-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 59267
    NORAD ID 59267
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 55 STARLINK-31579
    Time of Closest Approach 2026-09-03T10:40:44+0000
    Collision Probability (Pc) 1.970983E-6
    Conjunction Distance (km) 2.241 km
    Relative Speed (km/s) 12.529 km/s
    Conjunction Risk Parameters R (Radial): 1.578 | I (In-track): 0.913 | C (Cross-track): -1.304
    Collision Risk Index (CRI) 0.41
    X Position (km) -4215.587 -4215.68
    Position Y (km) -173.837 -175.031
    Position Z (km) 5373.398 5375.291
    Velocity X (km/s) 5.936 -1.118
    Velocity Y (km/s) 1.127 -7.473
    Velocity Z (km/s) 4.647 -1.117

    Orbital Parameters 国际轨道数据源

    Parameter USA 55 STARLINK-31579
    Semimajor Axis (a) 6809.906 km 6840.876 km
    Eccentricity (e) 0.005359 0.000061
    Inclination (i) 94.0951° 53.1608°
    RAAN 187.1157° 82.2307°
    Perigee Argument 192.5967° 90.5381°
    Mean Anomaly (M) 167.3954° 269.5691°
    Apogee 468.264 km 463.155 km
    Perigee 395.274 km 462.323 km
    Orbit Epoch 2026-09-02T14:14:32+0000 2026-09-01T22:17:17+0000

    USA 55 & STARLINK-31579 Collision Probability (Pc) Trend

    USA 55 & STARLINK-31579 Collision Probability (Pc) TrendNot Available

    USA 55 & STARLINK-31579 Miss Distance (Miss Distance) Trend

    USA 55 & STARLINK-31579 Miss Distance (Miss Distance) TrendNot Available

    USA 55Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31579Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 55Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31579Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 55

    No nearby objects data