Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.985975E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-08-29T08:39:20+0800
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    1 Object 1

    AOE ID 54869
    NORAD ID 54869
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 55112
    NORAD ID 55112
    Object Type PAYLOAD
    Country
    CH CH

    Conjunction Constraints

    Parameter STARLINK-5402 ASTROCAST-0404
    Time of Closest Approach 2026-08-29T02:05:16+0000
    Collision Probability (Pc) 1.985975E-6
    Conjunction Distance (km) 2.222 km
    Relative Speed (km/s) 12.304 km/s
    Conjunction Risk Parameters R (Radial): -2.105 | I (In-track): 0.414 | C (Cross-track): 0.578
    Collision Risk Index (CRI) 0.41
    X Position (km) -4360.084 -4361.466
    Position Y (km) 2575.954 2577.345
    Position Z (km) -4632.49 -4633.535
    Velocity X (km/s) -4.419 5.039
    Velocity Y (km/s) -6.162 -1.4
    Velocity Z (km/s) 0.733 -5.532

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-5402 ASTROCAST-0404
    Semimajor Axis (a) 6861.190 km 6855.418 km
    Eccentricity (e) 0.000172 0.000794
    Inclination (i) 43.0019° 97.5665°
    RAAN 234.6071° 335.5629°
    Perigee Argument 269.5062° 96.7257°
    Mean Anomaly (M) 90.5593° 263.4887°
    Apogee 484.233 km 482.725 km
    Perigee 481.873 km 471.837 km
    Orbit Epoch 2026-08-27T23:46:03+0000 2026-08-28T06:16:33+0000

    STARLINK-5402 & ASTROCAST-0404 Collision Probability (Pc) Trend

    STARLINK-5402 & ASTROCAST-0404 Collision Probability (Pc) TrendNot Available

    STARLINK-5402 & ASTROCAST-0404 Miss Distance (Miss Distance) Trend

    STARLINK-5402 & ASTROCAST-0404 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-5402Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    ASTROCAST-0404Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-5402Collision Probability Trend

    Object 1 Probability TrendNot Available

    ASTROCAST-0404Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-5402

    No nearby objects data