Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    4.891778E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T13:07:31+0800
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    1 Object 1

    Name IRAS
    AOE ID 13777
    NORAD ID 13777
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 31339
    NORAD ID 31339
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter IRAS FENGYUN 1C DEB
    Time of Closest Approach 2026-09-13T10:58:15+0000
    Collision Probability (Pc) 4.891778E-6
    Conjunction Distance (km) 1.649 km
    Relative Speed (km/s) 14.534 km/s
    Conjunction Risk Parameters R (Radial): 1.643 | I (In-track): -0.019 | C (Cross-track): 0.145
    Collision Risk Index (CRI) 0.49
    X Position (km) -604.95 -604.943
    Position Y (km) -5835.125 -5836.466
    Position Z (km) 4275.736 4276.695
    Velocity X (km/s) -1.882 -0.938
    Velocity Y (km/s) -4.129 4.373
    Velocity Z (km/s) -5.864 5.886

    Orbital Parameters 国际轨道数据源

    Parameter IRAS FENGYUN 1C DEB
    Semimajor Axis (a) 7268.513 km 7227.393 km
    Eccentricity (e) 0.001959 0.007259
    Inclination (i) 99.0706° 98.7037°
    RAAN 74.8851° 267.3880°
    Perigee Argument 88.1664° 272.0329°
    Mean Anomaly (M) 272.1745° 87.2532°
    Apogee 904.619 km 901.722 km
    Perigee 876.133 km 796.790 km
    Orbit Epoch 2026-09-10T22:18:03+0000 2026-09-10T06:19:10+0000

    IRAS & FENGYUN 1C DEB Collision Probability (Pc) Trend

    IRAS & FENGYUN 1C DEB Collision Probability (Pc) TrendNot Available

    IRAS & FENGYUN 1C DEB Miss Distance (Miss Distance) Trend

    IRAS & FENGYUN 1C DEB Miss Distance (Miss Distance) TrendNot Available

    IRASMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRASCollision Probability Trend

    Object 1 Probability TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRAS

    No nearby objects data