Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    7.244313E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T09:44:37+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 65785
    NORAD ID 65785
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter BB4 KUIPER-00172
    Time of Closest Approach 2026-09-12T22:20:25+0000
    Collision Probability (Pc) 7.244313E-6
    Conjunction Distance (km) 1.121 km
    Relative Speed (km/s) 3.911 km/s
    Conjunction Risk Parameters R (Radial): -1.12 | I (In-track): -0.028 | C (Cross-track): 0.002
    Collision Risk Index (CRI) 0.52
    X Position (km) 924.956 925.088
    Position Y (km) 6764.166 6765.255
    Position Z (km) 1571.424 1571.654
    Velocity X (km/s) -0.97 -4.554
    Velocity Y (km/s) 1.835 1.953
    Velocity Z (km/s) -7.254 -5.691

    Orbital Parameters 国际轨道数据源

    Parameter BB4 KUIPER-00172
    Semimajor Axis (a) 7004.157 km 7007.708 km
    Eccentricity (e) 0.000967 0.000059
    Inclination (i) 81.0023° 51.8998°
    RAAN 269.2618° 283.8062°
    Perigee Argument 87.6777° 41.5761°
    Mean Anomaly (M) 272.5539° 318.5247°
    Apogee 632.794 km 629.984 km
    Perigee 619.246 km 629.158 km
    Orbit Epoch 2026-09-08T12:11:53+0000 2026-09-10T09:38:20+0000

    BB4 & KUIPER-00172 Collision Probability (Pc) Trend

    BB4 & KUIPER-00172 Collision Probability (Pc) TrendNot Available

    BB4 & KUIPER-00172 Miss Distance (Miss Distance) Trend

    BB4 & KUIPER-00172 Miss Distance (Miss Distance) TrendNot Available

    BB4Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    KUIPER-00172Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    BB4Collision Probability Trend

    Object 1 Probability TrendNot Available

    KUIPER-00172Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with BB4

    No nearby objects data