Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    5.885967E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-14T10:23:26+0800
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    1 Object 1

    Name HJ-1B
    AOE ID 33321
    NORAD ID 33321
    Object Type PAYLOAD
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 67387
    NORAD ID 67387
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter HJ-1B LEMUR-2 KATIE
    Time of Closest Approach 2026-09-15T12:10:19+0000
    Collision Probability (Pc) 5.885967E-7
    Conjunction Distance (km) 2.36 km
    Relative Speed (km/s) 1.65 km/s
    Conjunction Risk Parameters R (Radial): -2.01 | I (In-track): 1.227 | C (Cross-track): 0.133
    Collision Risk Index (CRI) 0.3
    X Position (km) 917.396 918.075
    Position Y (km) -244.121 -243.029
    Position Z (km) -6916.536 -6918.514
    Velocity X (km/s) -3.31 -1.769
    Velocity Y (km/s) -6.791 -7.333
    Velocity Z (km/s) -0.209 0.021

    Orbital Parameters 国际轨道数据源

    Parameter HJ-1B LEMUR-2 KATIE
    Semimajor Axis (a) 6996.568 km 6974.014 km
    Eccentricity (e) 0.003465 0.000378
    Inclination (i) 97.6605° 97.8089°
    RAAN 242.2648° 254.4175°
    Perigee Argument 252.0525° 135.7264°
    Mean Anomaly (M) 107.6910° 224.4257°
    Apogee 642.678 km 598.515 km
    Perigee 594.184 km 593.239 km
    Orbit Epoch 2026-09-13T21:43:51+0000 2026-09-13T10:38:00+0000

    HJ-1B & LEMUR-2 KATIE Collision Probability (Pc) Trend

    HJ-1B & LEMUR-2 KATIE Collision Probability (Pc) TrendNot Available

    HJ-1B & LEMUR-2 KATIE Miss Distance (Miss Distance) Trend

    HJ-1B & LEMUR-2 KATIE Miss Distance (Miss Distance) TrendNot Available

    HJ-1BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    LEMUR-2 KATIEMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HJ-1BCollision Probability Trend

    Object 1 Probability TrendNot Available

    LEMUR-2 KATIECollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HJ-1B

    No nearby objects data