Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.98905E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-31T00:15:37+0800
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    1 Object 1

    AOE ID 47696
    NORAD ID 47696
    Object Type ROCKET BODY
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 54699
    NORAD ID 54699
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter CZ-4C R/B SHIYAN 20A (SY-20A)
    Time of Closest Approach 2026-10-31T22:28:56+0000
    Collision Probability (Pc) 1.98905E-6
    Conjunction Distance (km) 2.246 km
    Relative Speed (km/s) 12.814 km/s
    Conjunction Risk Parameters R (Radial): 0.419 | I (In-track): 1.141 | C (Cross-track): -1.888
    Collision Risk Index (CRI) 0.41
    X Position (km) 6282.569 6283.588
    Position Y (km) -1858.286 -1856.288
    Position Z (km) -2946.213 -2946.322
    Velocity X (km/s) 3.539 -1.289
    Velocity Y (km/s) 2.81 4.636
    Velocity Z (km/s) 6.048 -5.68

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4C R/B SHIYAN 20A (SY-20A)
    Semimajor Axis (a) 7382.725 km 7171.245 km
    Eccentricity (e) 0.031029 0.001212
    Inclination (i) 63.4537° 59.9948°
    RAAN 2.7481° 155.0863°
    Perigee Argument 1.0070° 28.1047°
    Mean Anomaly (M) 359.1528° 332.0640°
    Apogee 1233.666 km 801.801 km
    Perigee 775.510 km 784.415 km
    Orbit Epoch 2026-10-29T14:29:31+0000 2026-10-29T22:30:48+0000

    CZ-4C R/B & SHIYAN 20A (SY-20A) Collision Probability (Pc) Trend

    CZ-4C R/B & SHIYAN 20A (SY-20A) Collision Probability (Pc) TrendNot Available

    CZ-4C R/B & SHIYAN 20A (SY-20A) Miss Distance (Miss Distance) Trend

    CZ-4C R/B & SHIYAN 20A (SY-20A) Miss Distance (Miss Distance) TrendNot Available

    CZ-4C R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SHIYAN 20A (SY-20A)Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4C R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    SHIYAN 20A (SY-20A)Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4C R/B

    No nearby objects data