Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    4.701006E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T16:31:12+0800
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    1 Object 1

    Name BB4
    AOE ID 57757
    NORAD ID 57757
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 64515
    NORAD ID 64515
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter BB4 KUIPER-00055
    Time of Closest Approach 2026-09-12T21:29:35+0000
    Collision Probability (Pc) 4.701006E-6
    Conjunction Distance (km) 1.647 km
    Relative Speed (km/s) 13.602 km/s
    Conjunction Risk Parameters R (Radial): -0.728 | I (In-track): 0.64 | C (Cross-track): 1.332
    Collision Risk Index (CRI) 0.48
    X Position (km) -1045.418 -1046.905
    Position Y (km) -6442.484 -6442.781
    Position Z (km) -2557.832 -2558.474
    Velocity X (km/s) 0.817 5.261
    Velocity Y (km/s) -2.868 1.229
    Velocity Z (km/s) 6.925 -5.26

    Orbital Parameters 国际轨道数据源

    Parameter BB4 KUIPER-00055
    Semimajor Axis (a) 7004.157 km 7007.689 km
    Eccentricity (e) 0.000967 0.000070
    Inclination (i) 81.0023° 51.9018°
    RAAN 269.2618° 72.5908°
    Perigee Argument 87.6777° 105.3528°
    Mean Anomaly (M) 272.5539° 254.7512°
    Apogee 632.794 km 630.042 km
    Perigee 619.246 km 629.062 km
    Orbit Epoch 2026-09-08T12:11:53+0000 2026-09-10T16:41:47+0000

    BB4 & KUIPER-00055 Collision Probability (Pc) Trend

    BB4 & KUIPER-00055 Collision Probability (Pc) TrendNot Available

    BB4 & KUIPER-00055 Miss Distance (Miss Distance) Trend

    BB4 & KUIPER-00055 Miss Distance (Miss Distance) TrendNot Available

    BB4Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    KUIPER-00055Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    BB4Collision Probability Trend

    Object 1 Probability TrendNot Available

    KUIPER-00055Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with BB4

    No nearby objects data