Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.291453E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T06:34:34+0800
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    1 Object 1

    AOE ID 42337
    NORAD ID 42337
    Object Type DEBRIS
    Country
    US US
    VS

    2 Object 2

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

    Conjunction Constraints

    Parameter NOAA 16 DEB BB4
    Time of Closest Approach 2026-09-11T05:28:14+0000
    Collision Probability (Pc) 2.291453E-6
    Conjunction Distance (km) 2.205 km
    Relative Speed (km/s) 15.105 km/s
    Conjunction Risk Parameters R (Radial): 2.167 | I (In-track): -0.002 | C (Cross-track): 0.406
    Collision Risk Index (CRI) 0.42
    X Position (km) 1109.952 1110.694
    Position Y (km) 232.842 232.863
    Position Z (km) 6895.286 6897.362
    Velocity X (km/s) -0.94 0.447
    Velocity Y (km/s) -7.49 7.532
    Velocity Z (km/s) 0.416 -0.324

    Orbital Parameters 国际轨道数据源

    Parameter NOAA 16 DEB BB4
    Semimajor Axis (a) 7014.180 km 7004.157 km
    Eccentricity (e) 0.003157 0.000967
    Inclination (i) 98.8078° 81.0023°
    RAAN 81.3784° 269.2618°
    Perigee Argument 57.4302° 87.6777°
    Mean Anomaly (M) 302.9948° 272.5539°
    Apogee 658.187 km 632.794 km
    Perigee 613.899 km 619.246 km
    Orbit Epoch 2026-09-10T07:57:27+0000 2026-09-08T12:11:53+0000

    NOAA 16 DEB & BB4 Collision Probability (Pc) Trend

    NOAA 16 DEB & BB4 Collision Probability (Pc) TrendNot Available

    NOAA 16 DEB & BB4 Miss Distance (Miss Distance) Trend

    NOAA 16 DEB & BB4 Miss Distance (Miss Distance) TrendNot Available

    NOAA 16 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    BB4Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    NOAA 16 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    BB4Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with NOAA 16 DEB

    No nearby objects data