Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.468384E-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 68949
    NORAD ID 68949
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter HJ-1B KUIPER-00455
    Time of Closest Approach 2026-09-16T05:22:43+0000
    Collision Probability (Pc) 1.468384E-6
    Conjunction Distance (km) 2.709 km
    Relative Speed (km/s) 13.682 km/s
    Conjunction Risk Parameters R (Radial): 0.036 | I (In-track): -1.152 | C (Cross-track): -2.45
    Collision Risk Index (CRI) 0.38
    X Position (km) 1513.667 1515.415
    Position Y (km) 4717.644 4715.927
    Position Z (km) 4946.332 4947.485
    Velocity X (km/s) 2.948 -7.067
    Velocity Y (km/s) 4.538 -0.473
    Velocity Z (km/s) -5.253 2.607

    Orbital Parameters 国际轨道数据源

    Parameter HJ-1B KUIPER-00455
    Semimajor Axis (a) 6996.571 km 7007.689 km
    Eccentricity (e) 0.003463 0.000198
    Inclination (i) 97.6606° 51.9020°
    RAAN 242.0058° 33.1901°
    Perigee Argument 252.9549° 122.3317°
    Mean Anomaly (M) 106.7871° 237.7837°
    Apogee 642.661 km 630.940 km
    Perigee 594.207 km 628.164 km
    Orbit Epoch 2026-09-13T15:15:20+0000 2026-09-13T09:01:18+0000

    HJ-1B & KUIPER-00455 Collision Probability (Pc) Trend

    HJ-1B & KUIPER-00455 Collision Probability (Pc) TrendNot Available

    HJ-1B & KUIPER-00455 Miss Distance (Miss Distance) Trend

    HJ-1B & KUIPER-00455 Miss Distance (Miss Distance) TrendNot Available

    HJ-1BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    KUIPER-00455Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HJ-1BCollision Probability Trend

    Object 1 Probability TrendNot Available

    KUIPER-00455Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HJ-1B

    No nearby objects data