Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.741059E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T11:49:53+0800
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    1 Object 1

    AOE ID 66730
    NORAD ID 66730
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    Name HJS-9C
    AOE ID 68833
    NORAD ID 68833
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter FLOCK 4H 27 HJS-9C
    Time of Closest Approach 2026-10-22T21:44:36+0000
    Collision Probability (Pc) 1.741059E-6
    Conjunction Distance (km) 2.511 km
    Relative Speed (km/s) 14.786 km/s
    Conjunction Risk Parameters R (Radial): -0.36 | I (In-track): -0.598 | C (Cross-track): 2.412
    Collision Risk Index (CRI) 0.4
    X Position (km) -6757.745 -6757.866
    Position Y (km) -999.843 -1002.201
    Position Z (km) 818.762 817.908
    Velocity X (km/s) -1.043 1.387
    Velocity Y (km/s) 0.844 -4.241
    Velocity Z (km/s) -7.495 6.174

    Orbital Parameters 国际轨道数据源

    Parameter FLOCK 4H 27 HJS-9C
    Semimajor Axis (a) 6878.497 km 6886.478 km
    Eccentricity (e) 0.000115 0.000912
    Inclination (i) 97.4059° 55.0004°
    RAAN 5.2912° 195.1309°
    Perigee Argument 117.6987° 26.1386°
    Mean Anomaly (M) 242.4366° 334.0092°
    Apogee 501.152 km 514.623 km
    Perigee 499.568 km 502.059 km
    Orbit Epoch 2026-10-20T15:19:55+0000 2026-10-20T06:32:43+0000

    FLOCK 4H 27 & HJS-9C Collision Probability (Pc) Trend

    FLOCK 4H 27 & HJS-9C Collision Probability (Pc) TrendNot Available

    FLOCK 4H 27 & HJS-9C Miss Distance (Miss Distance) Trend

    FLOCK 4H 27 & HJS-9C Miss Distance (Miss Distance) TrendNot Available

    FLOCK 4H 27Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    HJS-9CMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FLOCK 4H 27Collision Probability Trend

    Object 1 Probability TrendNot Available

    HJS-9CCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FLOCK 4H 27

    No nearby objects data