Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.079004E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-14T10:27:23+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 67156
    NORAD ID 67156
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter HJ-1B KUIPER-00251
    Time of Closest Approach 2026-09-15T18:03:25+0000
    Collision Probability (Pc) 1.079004E-6
    Conjunction Distance (km) 2.761 km
    Relative Speed (km/s) 8.402 km/s
    Conjunction Risk Parameters R (Radial): -0.644 | I (In-track): 2.23 | C (Cross-track): -1.494
    Collision Risk Index (CRI) 0.36
    X Position (km) 1658.136 1658.757
    Position Y (km) 4866.194 4864.714
    Position Z (km) 4752.363 4754.609
    Velocity X (km/s) 2.916 -5.108
    Velocity Y (km/s) 4.313 4.678
    Velocity Z (km/s) -5.457 -2.996

    Orbital Parameters 国际轨道数据源

    Parameter HJ-1B KUIPER-00251
    Semimajor Axis (a) 6996.568 km 7007.691 km
    Eccentricity (e) 0.003465 0.000040
    Inclination (i) 97.6605° 51.9017°
    RAAN 242.2648° 308.2607°
    Perigee Argument 252.0525° 81.5799°
    Mean Anomaly (M) 107.6910° 278.5208°
    Apogee 642.678 km 629.833 km
    Perigee 594.184 km 629.275 km
    Orbit Epoch 2026-09-13T21:43:51+0000 2026-09-13T08:47:27+0000

    HJ-1B & KUIPER-00251 Collision Probability (Pc) Trend

    HJ-1B & KUIPER-00251 Collision Probability (Pc) TrendNot Available

    HJ-1B & KUIPER-00251 Miss Distance (Miss Distance) Trend

    HJ-1B & KUIPER-00251 Miss Distance (Miss Distance) TrendNot Available

    HJ-1BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    KUIPER-00251Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HJ-1BCollision Probability Trend

    Object 1 Probability TrendNot Available

    KUIPER-00251Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HJ-1B

    No nearby objects data