Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    3.546464E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T07:21:42+0800
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    1 Object 1

    AOE ID 41267
    NORAD ID 41267
    Object Type DEBRIS
    Country
    US US
    VS

    2 Object 2

    AOE ID 53529
    NORAD ID 53529
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter NOAA 16 DEB STARLINK-4478
    Time of Closest Approach 2026-09-11T01:09:07+0000
    Collision Probability (Pc) 3.546464E-5
    Conjunction Distance (km) 0.92 km
    Relative Speed (km/s) 14.445 km/s
    Conjunction Risk Parameters R (Radial): -0.225 | I (In-track): -0.289 | C (Cross-track): -0.843
    Collision Risk Index (CRI) 0.66
    X Position (km) -1168.12 -1168.87
    Position Y (km) 5459.326 5459.096
    Position Z (km) 4033.502 4033.982
    Velocity X (km/s) 2.321 -6.128
    Velocity Y (km/s) -3.984 1.765
    Velocity Z (km/s) 6.057 -4.152

    Orbital Parameters 国际轨道数据源

    Parameter NOAA 16 DEB STARLINK-4478
    Semimajor Axis (a) 6896.731 km 6891.686 km
    Eccentricity (e) 0.001179 0.000115
    Inclination (i) 98.7953° 53.2122°
    RAAN 106.5828° 317.3243°
    Perigee Argument 1.3488° 334.9573°
    Mean Anomaly (M) 358.7770° 25.1367°
    Apogee 526.726 km 514.343 km
    Perigee 510.462 km 512.755 km
    Orbit Epoch 2026-09-09T09:23:15+0000 2026-09-10T11:55:23+0000

    NOAA 16 DEB & STARLINK-4478 Collision Probability (Pc) Trend

    NOAA 16 DEB & STARLINK-4478 Collision Probability (Pc) TrendNot Available

    NOAA 16 DEB & STARLINK-4478 Miss Distance (Miss Distance) Trend

    NOAA 16 DEB & STARLINK-4478 Miss Distance (Miss Distance) TrendNot Available

    NOAA 16 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4478Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    NOAA 16 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4478Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with NOAA 16 DEB

    No nearby objects data