Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.023717E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-16T22:25:15+0800
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    1 Object 1

    AOE ID 52347
    NORAD ID 52347
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 54752
    NORAD ID 54752
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-3826 SHIYAN 21 (SY-21)
    Time of Closest Approach 2026-10-18T03:48:44+0000
    Collision Probability (Pc) 2.023717E-6
    Conjunction Distance (km) 2.053 km
    Relative Speed (km/s) 9.435 km/s
    Conjunction Risk Parameters R (Radial): -1.602 | I (In-track): 1.012 | C (Cross-track): -0.788
    Collision Risk Index (CRI) 0.41
    X Position (km) -3025.003 -3023.242
    Position Y (km) -5457.994 -5457.415
    Position Z (km) -2815.96 -2815.079
    Velocity X (km/s) 3.244 6.636
    Velocity Y (km/s) -4.497 -2.017
    Velocity Z (km/s) 5.241 -3.206

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3826 SHIYAN 21 (SY-21)
    Semimajor Axis (a) 6843.058 km 6859.610 km
    Eccentricity (e) 0.000024 0.002558
    Inclination (i) 53.1618° 35.9919°
    RAAN 271.0989° 34.2838°
    Perigee Argument 342.1429° 227.8037°
    Mean Anomaly (M) 17.9565° 132.0524°
    Apogee 465.083 km 499.021 km
    Perigee 464.759 km 463.925 km
    Orbit Epoch 2026-10-15T22:46:17+0000 2026-10-16T06:55:42+0000

    STARLINK-3826 & SHIYAN 21 (SY-21) Collision Probability (Pc) Trend

    STARLINK-3826 & SHIYAN 21 (SY-21) Collision Probability (Pc) TrendNot Available

    STARLINK-3826 & SHIYAN 21 (SY-21) Miss Distance (Miss Distance) Trend

    STARLINK-3826 & SHIYAN 21 (SY-21) Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3826Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

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

    Object 2 Miss Distance TrendNot Available

    STARLINK-3826Collision Probability Trend

    Object 1 Probability TrendNot Available

    SHIYAN 21 (SY-21)Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3826

    No nearby objects data