Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.847793E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-14T06:49:20+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) 2.847793E-6
    Conjunction Distance (km) 1.753 km
    Relative Speed (km/s) 8.402 km/s
    Conjunction Risk Parameters R (Radial): 0.638 | I (In-track): -1.357 | C (Cross-track): -0.907
    Collision Risk Index (CRI) 0.44
    X Position (km) 1657.898 1658.333
    Position Y (km) 4865.831 4865.103
    Position Z (km) 4752.827 4754.361
    Velocity X (km/s) 2.916 -5.109
    Velocity Y (km/s) 4.313 4.677
    Velocity Z (km/s) -5.456 -2.997

    Orbital Parameters 国际轨道数据源

    Parameter HJ-1B KUIPER-00251
    Semimajor Axis (a) 6996.571 km 7007.691 km
    Eccentricity (e) 0.003463 0.000040
    Inclination (i) 97.6606° 51.9017°
    RAAN 242.0058° 308.2607°
    Perigee Argument 252.9549° 81.5799°
    Mean Anomaly (M) 106.7871° 278.5208°
    Apogee 642.661 km 629.833 km
    Perigee 594.207 km 629.275 km
    Orbit Epoch 2026-09-13T15:15:20+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