Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    3.451963E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T19:48:48+0800
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    1 Object 1

    AOE ID 37931
    NORAD ID 37931
    Object Type PAYLOAD
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 65548
    NORAD ID 65548
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter SHIYAN 4 (SY-4) CZ-6A DEB
    Time of Closest Approach 2026-10-21T03:05:33+0000
    Collision Probability (Pc) 3.451963E-6
    Conjunction Distance (km) 1.416 km
    Relative Speed (km/s) 4.144 km/s
    Conjunction Risk Parameters R (Radial): 0.982 | I (In-track): -0.98 | C (Cross-track): 0.282
    Collision Risk Index (CRI) 0.46
    X Position (km) 2573.752 2573.318
    Position Y (km) -1265.01 -1264.672
    Position Z (km) -6592.076 -6593.381
    Velocity X (km/s) 4.418 6.596
    Velocity Y (km/s) -5.309 -1.789
    Velocity Z (km/s) 2.737 2.929

    Orbital Parameters 国际轨道数据源

    Parameter SHIYAN 4 (SY-4) CZ-6A DEB
    Semimajor Axis (a) 7165.978 km 7179.134 km
    Eccentricity (e) 0.002365 0.001365
    Inclination (i) 98.6911° 85.9919°
    RAAN 311.9589° 343.6801°
    Perigee Argument 137.9703° 47.6140°
    Mean Anomaly (M) 35.1502° 312.6204°
    Apogee 804.789 km 810.796 km
    Perigee 770.893 km 791.198 km
    Orbit Epoch 2026-10-19T20:20:12+0000 2026-10-19T21:07:04+0000

    SHIYAN 4 (SY-4) & CZ-6A DEB Collision Probability (Pc) Trend

    SHIYAN 4 (SY-4) & CZ-6A DEB Collision Probability (Pc) TrendNot Available

    SHIYAN 4 (SY-4) & CZ-6A DEB Miss Distance (Miss Distance) Trend

    SHIYAN 4 (SY-4) & CZ-6A DEB Miss Distance (Miss Distance) TrendNot Available

    SHIYAN 4 (SY-4)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    CZ-6A DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SHIYAN 4 (SY-4)Collision Probability Trend

    Object 1 Probability TrendNot Available

    CZ-6A DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SHIYAN 4 (SY-4)

    No nearby objects data