Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.300368E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T05:51:29+0800
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    1 Object 1

    Name IRS 1D
    AOE ID 24971
    NORAD ID 24971
    Object Type PAYLOAD
    Country
    IN IN
    VS

    2 Object 2

    AOE ID 29998
    NORAD ID 29998
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter IRS 1D FENGYUN 1C DEB
    Time of Closest Approach 2026-09-17T10:18:32+0000
    Collision Probability (Pc) 3.300368E-6
    Conjunction Distance (km) 1.737 km
    Relative Speed (km/s) 10.12 km/s
    Conjunction Risk Parameters R (Radial): 1.432 | I (In-track): 0.715 | C (Cross-track): 0.676
    Collision Risk Index (CRI) 0.45
    X Position (km) -1304.282 -1305.053
    Position Y (km) -819.205 -818.528
    Position Z (km) 6996.847 6998.248
    Velocity X (km/s) 1.457 -7.047
    Velocity Y (km/s) 7.212 2.189
    Velocity Z (km/s) 1.146 -1.059

    Orbital Parameters 国际轨道数据源

    Parameter IRS 1D FENGYUN 1C DEB
    Semimajor Axis (a) 7151.403 km 7171.268 km
    Eccentricity (e) 0.005144 0.000461
    Inclination (i) 98.8506° 99.2860°
    RAAN 255.1732° 341.6805°
    Perigee Argument 323.3875° 229.1366°
    Mean Anomaly (M) 36.3798° 130.9414°
    Apogee 810.052 km 796.441 km
    Perigee 736.480 km 789.821 km
    Orbit Epoch 2026-09-15T11:05:39+0000 2026-09-15T04:05:56+0000

    IRS 1D & FENGYUN 1C DEB Collision Probability (Pc) Trend

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

    IRS 1D & FENGYUN 1C DEB Miss Distance (Miss Distance) Trend

    IRS 1D & FENGYUN 1C DEB Miss Distance (Miss Distance) TrendNot Available

    IRS 1DMiss 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

    IRS 1DCollision Probability Trend

    Object 1 Probability TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRS 1D

    No nearby objects data