Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.191884E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-13T00:10:47+0800
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    1 Object 1

    Name CALIPSO
    AOE ID 29108
    NORAD ID 29108
    Object Type PAYLOAD
    Country
    FR FR
    VS

    2 Object 2

    AOE ID 41133
    NORAD ID 41133
    Object Type DEBRIS
    Country
    US US

    Conjunction Constraints

    Parameter CALIPSO NOAA 16 DEB
    Time of Closest Approach 2026-09-12T17:41:33+0000
    Collision Probability (Pc) 2.191884E-6
    Conjunction Distance (km) 2.236 km
    Relative Speed (km/s) 14.79 km/s
    Conjunction Risk Parameters R (Radial): -0.749 | I (In-track): 0.404 | C (Cross-track): 2.068
    Collision Risk Index (CRI) 0.42
    X Position (km) -177.068 -179.155
    Position Y (km) -5698.893 -5698.208
    Position Z (km) 4125.329 4124.908
    Velocity X (km/s) -1.229 -1.577
    Velocity Y (km/s) 4.388 -4.297
    Velocity Z (km/s) 5.992 -5.974

    Orbital Parameters 国际轨道数据源

    Parameter CALIPSO NOAA 16 DEB
    Semimajor Axis (a) 7040.852 km 7036.328 km
    Eccentricity (e) 0.000145 0.001234
    Inclination (i) 98.4468° 98.9243°
    RAAN 273.9631° 80.3013°
    Perigee Argument 72.6815° 36.6425°
    Mean Anomaly (M) 287.4547° 323.5620°
    Apogee 663.734 km 666.878 km
    Perigee 661.696 km 649.504 km
    Orbit Epoch 2026-09-12T07:43:21+0000 2026-09-11T11:39:24+0000

    CALIPSO & NOAA 16 DEB Collision Probability (Pc) Trend

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

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

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

    CALIPSOMiss 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

    CALIPSOCollision Probability Trend

    Object 1 Probability TrendNot Available

    NOAA 16 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CALIPSO

    No nearby objects data