Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.146672E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-28T02:12:06+0800
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    1 Object 1

    AOE ID 53529
    NORAD ID 53529
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 57728
    NORAD ID 57728
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-4478 YAOGAN-39 01B
    Time of Closest Approach 2026-10-28T19:00:38+0000
    Collision Probability (Pc) 1.146672E-6
    Conjunction Distance (km) 2.301 km
    Relative Speed (km/s) 5.512 km/s
    Conjunction Risk Parameters R (Radial): 0.467 | I (In-track): -2.1 | C (Cross-track): -0.814
    Collision Risk Index (CRI) 0.36
    X Position (km) 3547 3545.915
    Position Y (km) -4393.914 -4395.899
    Position Z (km) -3950.97 -3950.551
    Velocity X (km/s) 2.457 5.896
    Velocity Y (km/s) 5.802 4.803
    Velocity Z (km/s) -4.253 -0.064

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4478 YAOGAN-39 01B
    Semimajor Axis (a) 6886.675 km 6892.565 km
    Eccentricity (e) 0.000260 0.000878
    Inclination (i) 53.2125° 34.9948°
    RAAN 104.7343° 49.1847°
    Perigee Argument 86.8738° 188.5610°
    Mean Anomaly (M) 273.2556° 171.4954°
    Apogee 510.329 km 520.482 km
    Perigee 506.747 km 508.374 km
    Orbit Epoch 2026-10-27T04:07:34+0000 2026-10-27T07:05:08+0000

    STARLINK-4478 & YAOGAN-39 01B Collision Probability (Pc) Trend

    STARLINK-4478 & YAOGAN-39 01B Collision Probability (Pc) TrendNot Available

    STARLINK-4478 & YAOGAN-39 01B Miss Distance (Miss Distance) Trend

    STARLINK-4478 & YAOGAN-39 01B Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4478Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    YAOGAN-39 01BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4478Collision Probability Trend

    Object 1 Probability TrendNot Available

    YAOGAN-39 01BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4478

    No nearby objects data