Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.581514E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-30T22:49:10+0800
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    1 Object 1

    AOE ID 45754
    NORAD ID 45754
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 52713
    NORAD ID 52713
    Object Type PAYLOAD
    Country
    CIS CIS

    Conjunction Constraints

    Parameter STARLINK-1477 COSMOS 2556
    Time of Closest Approach 2026-10-30T22:24:39+0000
    Collision Probability (Pc) 1.581514E-6
    Conjunction Distance (km) 2.159 km
    Relative Speed (km/s) 7.618 km/s
    Conjunction Risk Parameters R (Radial): 0.665 | I (In-track): -1.779 | C (Cross-track): -1.026
    Collision Risk Index (CRI) 0.39
    X Position (km) -1794.211 -1795.452
    Position Y (km) -5065.747 -5067.131
    Position Z (km) 4262.625 4261.527
    Velocity X (km/s) 6.535 0.342
    Velocity Y (km/s) 0.912 4.839
    Velocity Z (km/s) 3.823 5.882

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-1477 COSMOS 2556
    Semimajor Axis (a) 6865.762 km 6863.982 km
    Eccentricity (e) 0.000228 0.000182
    Inclination (i) 53.0195° 97.6464°
    RAAN 218.5026° 255.5890°
    Perigee Argument 67.2845° 65.8344°
    Mean Anomaly (M) 153.0151° 294.3084°
    Apogee 489.193 km 487.095 km
    Perigee 486.057 km 484.595 km
    Orbit Epoch 2026-10-29T22:00:02+0000 2026-10-29T22:38:44+0000

    STARLINK-1477 & COSMOS 2556 Collision Probability (Pc) Trend

    STARLINK-1477 & COSMOS 2556 Collision Probability (Pc) TrendNot Available

    STARLINK-1477 & COSMOS 2556 Miss Distance (Miss Distance) Trend

    STARLINK-1477 & COSMOS 2556 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-1477Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    COSMOS 2556Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-1477Collision Probability Trend

    Object 1 Probability TrendNot Available

    COSMOS 2556Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-1477

    No nearby objects data