Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    4.041993E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T19:48:46+0800
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    1 Object 1

    AOE ID 36827
    NORAD ID 36827
    Object Type PAYLOAD
    Country
    SE SE
    ← VS →

    2 Object 2

    AOE ID 37931
    NORAD ID 37931
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter PRISMA (TANGO) SHIYAN 4 (SY-4)
    Time of Closest Approach 2026-10-22T05:16:00+0000
    Collision Probability (Pc) 4.041993E-5
    Conjunction Distance (km) 0.888 km
    Relative Speed (km/s) 14.702 km/s
    Conjunction Risk Parameters R (Radial): -0.619 | I (In-track): -0.102 | C (Cross-track): 0.628
    Collision Risk Index (CRI) 0.67
    X Position (km) -4638.025 -4638.012
    Position Y (km) 3922.193 3923.014
    Position Z (km) 3766.737 3767.072
    Velocity X (km/s) 3.792 -2.112
    Velocity Y (km/s) -1.526 3.527
    Velocity Z (km/s) 6.234 -6.246

    Orbital Parameters 国际轨道数据源

    Parameter PRISMA (TANGO) SHIYAN 4 (SY-4)
    Semimajor Axis (a) 7120.535 km 7165.978 km
    Eccentricity (e) 0.004032 0.002365
    Inclination (i) 98.4163° 98.6911°
    RAAN 142.7098° 311.9589°
    Perigee Argument 213.5439° 137.9703°
    Mean Anomaly (M) 146.3198° 35.1502°
    Apogee 771.108 km 804.789 km
    Perigee 713.688 km 770.893 km
    Orbit Epoch 2026-10-19T20:36:33+0000 2026-10-19T20:20:12+0000

    PRISMA (TANGO) & SHIYAN 4 (SY-4) Collision Probability (Pc) Trend

    PRISMA (TANGO) & SHIYAN 4 (SY-4) Collision Probability (Pc) TrendNot Available

    PRISMA (TANGO) & SHIYAN 4 (SY-4) Miss Distance (Miss Distance) Trend

    PRISMA (TANGO) & SHIYAN 4 (SY-4) Miss Distance (Miss Distance) TrendNot Available

    PRISMA (TANGO)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

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

    Object 2 Miss Distance TrendNot Available

    PRISMA (TANGO)Collision Probability Trend

    Object 1 Probability TrendNot Available

    SHIYAN 4 (SY-4)Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with PRISMA (TANGO)

    No nearby objects data