Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.615597E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T13:32:27+0800
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    1 Object 1

    AOE ID 24871
    NORAD ID 24871
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

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

    Conjunction Constraints

    Parameter IRIDIUM 920 IRS 1D
    Time of Closest Approach 2026-09-11T12:59:18+0000
    Collision Probability (Pc) 1.615597E-6
    Conjunction Distance (km) 2.55 km
    Relative Speed (km/s) 13.632 km/s
    Conjunction Risk Parameters R (Radial): 2.404 | I (In-track): -0.344 | C (Cross-track): -0.776
    Collision Risk Index (CRI) 0.39
    X Position (km) 1165.933 1165.709
    Position Y (km) 14.538 15.119
    Position Z (km) -7046.626 -7049.098
    Velocity X (km/s) 6.753 -2.355
    Velocity Y (km/s) 2.955 -7.076
    Velocity Z (km/s) 1.132 -0.368

    Orbital Parameters 国际轨道数据源

    Parameter IRIDIUM 920 IRS 1D
    Semimajor Axis (a) 7130.240 km 7151.408 km
    Eccentricity (e) 0.001278 0.005167
    Inclination (i) 86.3997° 98.8503°
    RAAN 23.4240° 250.1677°
    Perigee Argument 42.9808° 337.8928°
    Mean Anomaly (M) 317.2388° 22.0028°
    Apogee 761.215 km 810.226 km
    Perigee 742.991 km 736.316 km
    Orbit Epoch 2026-09-10T17:22:45+0000 2026-09-10T13:59:57+0000

    IRIDIUM 920 & IRS 1D Collision Probability (Pc) Trend

    IRIDIUM 920 & IRS 1D Collision Probability (Pc) TrendNot Available

    IRIDIUM 920 & IRS 1D Miss Distance (Miss Distance) Trend

    IRIDIUM 920 & IRS 1D Miss Distance (Miss Distance) TrendNot Available

    IRIDIUM 920Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRS 1DMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRIDIUM 920Collision Probability Trend

    Object 1 Probability TrendNot Available

    IRS 1DCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRIDIUM 920

    No nearby objects data