Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    1.080618E-5
    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 31172
    NORAD ID 31172
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter IRAS FENGYUN 1C DEB
    Time of Closest Approach 2026-09-13T17:59:27+0000
    Collision Probability (Pc) 1.080618E-5
    Conjunction Distance (km) 1.299 km
    Relative Speed (km/s) 14.583 km/s
    Conjunction Risk Parameters R (Radial): -0.845 | I (In-track): 0.161 | C (Cross-track): -0.972
    Collision Risk Index (CRI) 0.56
    X Position (km) -1508.852 -1509.641
    Position Y (km) -7109.756 -7108.726
    Position Z (km) 264.494 264.458
    Velocity X (km/s) -1.202 -0.994
    Velocity Y (km/s) -0.039 0.506
    Velocity Z (km/s) -7.306 7.266

    Orbital Parameters 国际轨道数据源

    Parameter IRAS FENGYUN 1C DEB
    Semimajor Axis (a) 7268.513 km 7164.116 km
    Eccentricity (e) 0.001959 0.014868
    Inclination (i) 99.0706° 98.4302°
    RAAN 74.8851° 254.9244°
    Perigee Argument 88.1664° 183.9132°
    Mean Anomaly (M) 272.1745° 176.0902°
    Apogee 904.619 km 892.498 km
    Perigee 876.133 km 679.460 km
    Orbit Epoch 2026-09-10T22:18:03+0000 2026-09-10T06:06:58+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