Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    7.879754E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T13:05:28+0800
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    1 Object 1

    AOE ID 20576
    NORAD ID 20576
    Object Type DEBRIS
    Country
    US US
    VS

    2 Object 2

    AOE ID 59238
    NORAD ID 59238
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter ATLAS 28E DEB STARLINK-31494
    Time of Closest Approach 2026-09-12T08:25:15+0000
    Collision Probability (Pc) 7.879754E-6
    Conjunction Distance (km) 1.343 km
    Relative Speed (km/s) 10.917 km/s
    Conjunction Risk Parameters R (Radial): -0.168 | I (In-track): 0.934 | C (Cross-track): -0.95
    Collision Risk Index (CRI) 0.53
    X Position (km) -657.564 -656.511
    Position Y (km) -4976.355 -4975.738
    Position Z (km) 4668.525 4669.084
    Velocity X (km/s) 0.787 7.529
    Velocity Y (km/s) 5.139 -1.203
    Velocity Z (km/s) 5.567 -0.222

    Orbital Parameters 国际轨道数据源

    Parameter ATLAS 28E DEB STARLINK-31494
    Semimajor Axis (a) 6842.565 km 6861.224 km
    Eccentricity (e) 0.002419 0.000068
    Inclination (i) 89.4095° 43.0011°
    RAAN 262.0335° 179.5750°
    Perigee Argument 212.6778° 278.2802°
    Mean Anomaly (M) 147.2980° 81.7973°
    Apogee 480.981 km 483.555 km
    Perigee 447.875 km 482.619 km
    Orbit Epoch 2026-09-10T23:21:05+0000 2026-09-10T12:04:42+0000

    ATLAS 28E DEB & STARLINK-31494 Collision Probability (Pc) Trend

    ATLAS 28E DEB & STARLINK-31494 Collision Probability (Pc) TrendNot Available

    ATLAS 28E DEB & STARLINK-31494 Miss Distance (Miss Distance) Trend

    ATLAS 28E DEB & STARLINK-31494 Miss Distance (Miss Distance) TrendNot Available

    ATLAS 28E DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31494Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ATLAS 28E DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31494Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ATLAS 28E DEB

    No nearby objects data