Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.637978E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-31T04:02:32+0800
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    1 Object 1

    AOE ID 33698
    NORAD ID 33698
    Object Type DEBRIS
    Country
    CN CN
    ← VS →

    2 Object 2

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

    Conjunction Constraints

    Parameter FENGYUN 1C DEB SHIYAN 20A (SY-20A)
    Time of Closest Approach 2026-11-01T20:57:20+0000
    Collision Probability (Pc) 1.637978E-6
    Conjunction Distance (km) 2.592 km
    Relative Speed (km/s) 14.636 km/s
    Conjunction Risk Parameters R (Radial): -1.846 | I (In-track): -0.335 | C (Cross-track): 1.788
    Collision Risk Index (CRI) 0.39
    X Position (km) -5338.733 -5341.139
    Position Y (km) 4599.722 4599.537
    Position Z (km) -1299.527 -1300.471
    Velocity X (km/s) 1.867 -3.35
    Velocity Y (km/s) 0.059 -2.121
    Velocity Z (km/s) -7.178 6.322

    Orbital Parameters 国际轨道数据源

    Parameter FENGYUN 1C DEB SHIYAN 20A (SY-20A)
    Semimajor Axis (a) 7082.471 km 7171.245 km
    Eccentricity (e) 0.013607 0.001212
    Inclination (i) 99.6441° 59.9948°
    RAAN 316.5620° 155.0863°
    Perigee Argument 347.6275° 28.1047°
    Mean Anomaly (M) 12.1589° 332.0640°
    Apogee 800.707 km 801.801 km
    Perigee 607.961 km 784.415 km
    Orbit Epoch 2026-10-28T23:45:12+0000 2026-10-29T22:30:48+0000

    FENGYUN 1C DEB & SHIYAN 20A (SY-20A) Collision Probability (Pc) Trend

    FENGYUN 1C DEB & SHIYAN 20A (SY-20A) Collision Probability (Pc) TrendNot Available

    FENGYUN 1C DEB & SHIYAN 20A (SY-20A) Miss Distance (Miss Distance) Trend

    FENGYUN 1C DEB & SHIYAN 20A (SY-20A) Miss Distance (Miss Distance) TrendNot Available

    FENGYUN 1C DEBMiss 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

    FENGYUN 1C DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

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

    Object 2 Probability TrendNot Available

    Nearby Objects with FENGYUN 1C DEB

    No nearby objects data