Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    7.778856E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T05:12:12+0800
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    1 Object 1

    Name USA 56
    AOE ID 20560
    NORAD ID 20560
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 42409
    NORAD ID 42409
    Object Type DEBRIS
    Country
    US US

    Conjunction Constraints

    Parameter USA 56 NOAA 16 DEB
    Time of Closest Approach 2026-09-16T03:56:34+0000
    Collision Probability (Pc) 7.778856E-5
    Conjunction Distance (km) 0.726 km
    Relative Speed (km/s) 15.037 km/s
    Conjunction Risk Parameters R (Radial): -0.722 | I (In-track): 0.002 | C (Cross-track): -0.057
    Collision Risk Index (CRI) 0.73
    X Position (km) -1158.977 -1158.8
    Position Y (km) -6261.457 -6260.821
    Position Z (km) 2922.188 2921.887
    Velocity X (km/s) 0.588 -1.812
    Velocity Y (km/s) 3.062 -2.835
    Velocity Z (km/s) 6.875 -6.747

    Orbital Parameters 国际轨道数据源

    Parameter USA 56 NOAA 16 DEB
    Semimajor Axis (a) 7014.440 km 6996.315 km
    Eccentricity (e) 0.005861 0.001898
    Inclination (i) 89.8560° 98.7819°
    RAAN 259.4595° 73.5614°
    Perigee Argument 307.5191° 20.8476°
    Mean Anomaly (M) 52.0712° 339.3505°
    Apogee 677.418 km 631.455 km
    Perigee 595.188 km 604.901 km
    Orbit Epoch 2026-09-15T11:34:51+0000 2026-09-14T10:46:50+0000

    USA 56 & NOAA 16 DEB Collision Probability (Pc) Trend

    USA 56 & NOAA 16 DEB Collision Probability (Pc) TrendNot Available

    USA 56 & NOAA 16 DEB Miss Distance (Miss Distance) Trend

    USA 56 & NOAA 16 DEB Miss Distance (Miss Distance) TrendNot Available

    USA 56Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    NOAA 16 DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 56Collision Probability Trend

    Object 1 Probability TrendNot Available

    NOAA 16 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 56

    No nearby objects data