Conjunction Event Detail

    ✅
    Very Low Risk
    Very low collision probability. Continue monitoring.
    2.546297E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T07:52:37+0800
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    1 Object 1

    AOE ID 66716
    NORAD ID 66716
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 66721
    NORAD ID 66721
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FLOCK 4H 13 FLOCK 4H 18
    Time of Closest Approach 2026-10-20T07:41:10+0000
    Collision Probability (Pc) 2.546297E-7
    Conjunction Distance (km) 2.74 km
    Relative Speed (km/s) 0.086 km/s
    Conjunction Risk Parameters R (Radial): -0.994 | I (In-track): -2.552 | C (Cross-track): -0.041
    Collision Risk Index (CRI) 0.23
    X Position (km) -121.699 -119.169
    Position Y (km) 881.327 881.623
    Position Z (km) -6828.249 -6829.258
    Velocity X (km/s) 7.564 7.572
    Velocity Y (km/s) 0.707 0.623
    Velocity Z (km/s) -0.044 -0.05

    Orbital Parameters 国际轨道数据源

    Parameter FLOCK 4H 13 FLOCK 4H 18
    Semimajor Axis (a) 6878.144 km 6880.583 km
    Eccentricity (e) 0.000128 0.000266
    Inclination (i) 97.4111° 97.4066°
    RAAN 4.4743° 3.5062°
    Perigee Argument 149.1059° 332.7905°
    Mean Anomaly (M) 211.0252° 27.3191°
    Apogee 500.889 km 504.279 km
    Perigee 499.125 km 500.613 km
    Orbit Epoch 2026-10-19T11:34:10+0000 2026-10-19T03:39:54+0000

    FLOCK 4H 13 & FLOCK 4H 18 Collision Probability (Pc) Trend

    FLOCK 4H 13 & FLOCK 4H 18 Collision Probability (Pc) TrendNot Available

    FLOCK 4H 13 & FLOCK 4H 18 Miss Distance (Miss Distance) Trend

    FLOCK 4H 13 & FLOCK 4H 18 Miss Distance (Miss Distance) TrendNot Available

    FLOCK 4H 13Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    FLOCK 4H 18Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FLOCK 4H 13Collision Probability Trend

    Object 1 Probability TrendNot Available

    FLOCK 4H 18Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FLOCK 4H 13

    No nearby objects data