Conjunction Event Detail

    ✅
    Very Low Risk
    Very low collision probability. Continue monitoring.
    4.640962E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-29T11:28:53+0800
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    1 Object 1

    AOE ID 37227
    NORAD ID 37227
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 37380
    NORAD ID 37380
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FAST 1 (USA 222) FAST 2 (USA 228)
    Time of Closest Approach 2026-10-30T11:27:37+0000
    Collision Probability (Pc) 4.640962E-7
    Conjunction Distance (km) 2.555 km
    Relative Speed (km/s) 1.245 km/s
    Conjunction Risk Parameters R (Radial): 2.555 | I (In-track): 0.069 | C (Cross-track): 0.009
    Collision Risk Index (CRI) 0.28
    X Position (km) 680.451 680.764
    Position Y (km) -2063.183 -2063.913
    Position Z (km) 6644.405 6646.833
    Velocity X (km/s) 7.323 6.948
    Velocity Y (km/s) 1.808 2.931
    Velocity Z (km/s) -0.198 0.188

    Orbital Parameters 国际轨道数据源

    Parameter FAST 1 (USA 222) FAST 2 (USA 228)
    Semimajor Axis (a) 6990.347 km 6992.297 km
    Eccentricity (e) 0.001621 0.001685
    Inclination (i) 71.9666° 71.9719°
    RAAN 197.9346° 208.4846°
    Perigee Argument 227.6735° 227.1118°
    Mean Anomaly (M) 132.3058° 132.8634°
    Apogee 623.545 km 625.945 km
    Perigee 600.875 km 602.375 km
    Orbit Epoch 2026-10-28T10:33:40+0000 2026-10-28T04:05:13+0000

    FAST 1 (USA 222) & FAST 2 (USA 228) Collision Probability (Pc) Trend

    FAST 1 (USA 222) & FAST 2 (USA 228) Collision Probability (Pc) TrendNot Available

    FAST 1 (USA 222) & FAST 2 (USA 228) Miss Distance (Miss Distance) Trend

    FAST 1 (USA 222) & FAST 2 (USA 228) Miss Distance (Miss Distance) TrendNot Available

    FAST 1 (USA 222)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    FAST 2 (USA 228)Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FAST 1 (USA 222)Collision Probability Trend

    Object 1 Probability TrendNot Available

    FAST 2 (USA 228)Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FAST 1 (USA 222)

    No nearby objects data