Conjunction Event Detail

    ✅
    Very Low Risk
    Very low collision probability. Continue monitoring.
    9.021138E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-28T03:26:40+0800
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    1 Object 1

    AOE ID 54752
    NORAD ID 54752
    Object Type PAYLOAD
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 61641
    NORAD ID 61641
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter SHIYAN 21 (SY-21) STARLINK-32327
    Time of Closest Approach 2026-10-29T19:53:36+0000
    Collision Probability (Pc) 9.021138E-7
    Conjunction Distance (km) 2.237 km
    Relative Speed (km/s) 3.241 km/s
    Conjunction Risk Parameters R (Radial): -0.554 | I (In-track): -2.116 | C (Cross-track): 0.464
    Collision Risk Index (CRI) 0.34
    X Position (km) 4198.447 4199.269
    Position Y (km) 3630.58 3628.501
    Position Z (km) 4027.731 4027.803
    Velocity X (km/s) -4.929 -3.056
    Velocity Y (km/s) 5.817 6.471
    Velocity Z (km/s) -0.074 -2.636

    Orbital Parameters 国际轨道数据源

    Parameter SHIYAN 21 (SY-21) STARLINK-32327
    Semimajor Axis (a) 6859.160 km 6861.137 km
    Eccentricity (e) 0.002540 0.000324
    Inclination (i) 35.9931° 42.9867°
    RAAN 325.5705° 286.5517°
    Perigee Argument 320.7039° 279.0971°
    Mean Anomaly (M) 39.1852° 80.9513°
    Apogee 498.443 km 485.227 km
    Perigee 463.603 km 480.773 km
    Orbit Epoch 2026-10-27T06:20:58+0000 2026-10-27T06:10:11+0000

    SHIYAN 21 (SY-21) & STARLINK-32327 Collision Probability (Pc) Trend

    SHIYAN 21 (SY-21) & STARLINK-32327 Collision Probability (Pc) TrendNot Available

    SHIYAN 21 (SY-21) & STARLINK-32327 Miss Distance (Miss Distance) Trend

    SHIYAN 21 (SY-21) & STARLINK-32327 Miss Distance (Miss Distance) TrendNot Available

    SHIYAN 21 (SY-21)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-32327Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SHIYAN 21 (SY-21)Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-32327Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SHIYAN 21 (SY-21)

    No nearby objects data