Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    5.593634E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T05:33:37+0800
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    1 Object 1

    AOE ID 25042
    NORAD ID 25042
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 41291
    NORAD ID 41291
    Object Type DEBRIS
    Country
    US US

    Conjunction Constraints

    Parameter IRIDIUM 39 NOAA 16 DEB
    Time of Closest Approach 2026-09-18T04:42:48+0000
    Collision Probability (Pc) 5.593634E-6
    Conjunction Distance (km) 1.576 km
    Relative Speed (km/s) 14.355 km/s
    Conjunction Risk Parameters R (Radial): -1.399 | I (In-track): -0.189 | C (Cross-track): 0.699
    Collision Risk Index (CRI) 0.5
    X Position (km) -1206.943 -1206.709
    Position Y (km) -768.314 -768.882
    Position Z (km) -6958.62 -6957.169
    Velocity X (km/s) 7.129 -7.013
    Velocity Y (km/s) 1.766 2.393
    Velocity Z (km/s) -1.441 0.943

    Orbital Parameters 国际轨道数据源

    Parameter IRIDIUM 39 NOAA 16 DEB
    Semimajor Axis (a) 7104.298 km 7073.833 km
    Eccentricity (e) 0.001623 0.003295
    Inclination (i) 86.3951° 98.9724°
    RAAN 15.7411° 159.0691°
    Perigee Argument 218.4081° 127.5179°
    Mean Anomaly (M) 141.5969° 232.9022°
    Apogee 737.691 km 719.008 km
    Perigee 714.631 km 672.384 km
    Orbit Epoch 2026-09-15T14:14:08+0000 2026-09-15T04:41:05+0000

    IRIDIUM 39 & NOAA 16 DEB Collision Probability (Pc) Trend

    IRIDIUM 39 & NOAA 16 DEB Collision Probability (Pc) TrendNot Available

    IRIDIUM 39 & NOAA 16 DEB Miss Distance (Miss Distance) Trend

    IRIDIUM 39 & NOAA 16 DEB Miss Distance (Miss Distance) TrendNot Available

    IRIDIUM 39Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    NOAA 16 DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRIDIUM 39Collision Probability Trend

    Object 1 Probability TrendNot Available

    NOAA 16 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRIDIUM 39

    No nearby objects data