Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.463615E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-09T05:15:23+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 31239
    NORAD ID 31239
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter IRAS FENGYUN 1C DEB
    Time of Closest Approach 2026-09-09T00:59:26+0000
    Collision Probability (Pc) 1.463615E-6
    Conjunction Distance (km) 2.783 km
    Relative Speed (km/s) 14.564 km/s
    Conjunction Risk Parameters R (Radial): -0.573 | I (In-track): -0.445 | C (Cross-track): 2.687
    Collision Risk Index (CRI) 0.38
    X Position (km) -2389.829 -2387.096
    Position Y (km) -6219.064 -6219.542
    Position Z (km) -2931.69 -2931.48
    Velocity X (km/s) -0.142 -2.196
    Velocity Y (km/s) 3.18 -2.29
    Velocity Z (km/s) -6.676 6.664

    Orbital Parameters 国际轨道数据源

    Parameter IRAS FENGYUN 1C DEB
    Semimajor Axis (a) 7268.519 km 7236.902 km
    Eccentricity (e) 0.001954 0.004987
    Inclination (i) 99.0701° 98.7741°
    RAAN 72.4738° 244.0091°
    Perigee Argument 94.6712° 155.9445°
    Mean Anomaly (M) 265.6685° 233.9666°
    Apogee 904.582 km 894.860 km
    Perigee 876.182 km 822.670 km
    Orbit Epoch 2026-09-08T12:01:27+0000 2026-09-07T21:59:58+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